Anchuruli, also written Anjuruli, is a reservoir-side destination in the Kanchiyar area near Kattappana. Its defining feature is the circular outlet of the Erattayar–Idukki water tunnel, set into a rock face above the reservoir. The tunnel, short cascade and wooded water margins form one landscape, but they are different features: this is not the Idukki arch dam or a natural cave.
Come for an exterior view of the engineered opening and the reservoir’s changing shoreline. The visible opening carries water into the Idukki system. A low-flow photograph showing people inside does not make the tunnel a visitor passage, and a view of bare reservoir banks does not establish a safe walking route across them.
A nearly circular opening interrupts the rough rock wall at Anchuruli. Beyond it lies an engineered route through the hill; below it, water meets the irregular outline of a reservoir. The contrast between a measured opening and a changing shoreline is the place’s strongest visual feature.
The tunnel is easiest to understand as one end of a journey made by water. Erattayar lies upstream in the diversion system, and the opening at Anchuruli delivers that water towards Idukki reservoir. The dark interior can draw the eye like a cave, but the circular section and its purpose belong to civil engineering. The meaningful visitor view is from outside, where the outlet can be seen in relation to the rock face and the receiving water.
The rock around the opening has an uneven, blocky surface. Inside, the visible curve is more regular. This makes the boundary between excavated passage and surrounding hill legible even without a technical drawing. A close view concentrates on that geometry; a wider one shows how the water moves away from the opening towards the reservoir.
The short cascade below the outlet is not a second high waterfall hidden in the forest. In the photographs it runs over a broad sloping rock surface, at times as a narrow stream and at others as a wider white sheet. Water level and discharge determine how much of that surface remains visible. The same fixed rock can therefore produce very different-looking photographs.
Turning towards the reservoir changes the scale of the visit. The near bank curves into points and shallow inlets, while wooded hills continue across the water. Bare horizontal bands mark the exposed margins in lower-water photographs. These are part of a fluctuating reservoir shore, not terraces built for visitors to descend.
Kerala Tourism records a local explanation of the name: five hill forms are likened to inverted cooking vessels when lower water reveals their outlines. This is a landscape interpretation associated with Anchuruli. It should not become a promise that exactly five separate islands will be visible on every visit, or an invitation to reach them across exposed ground.
The smaller channels also belong in the picture. The Irrigation Department’s Periyar basin report records Kattappanayar joining Idukki reservoir at Anjurali and describes Palakada thodu reaching the reservoir in the same locality. The water landscape is therefore wider than the single celebrated tunnel. The tunnel is an engineered contribution within a catchment that also receives local drainage.
From the public side, the forested slopes create much of the setting, but the visible tree cover does not grant access to an unmarked trail. Kerala Tourism explicitly separates deeper forest exploration from the ordinary visit by requiring prior Forest Department permission. A reservoir viewpoint, a forest activity and access to an operating water structure should remain three different decisions.
Anchuruli also helps distinguish the two sides of Idukki’s power story. Water arriving here contributes to reservoir storage. Power generation takes place elsewhere in the system at Moolamattom, and the tailwater subsequently enters the Thodupuzha side. The outlet in front of a visitor is not a power-station entrance, nor is it the tunnel that releases water after generation.
The road journey ends in a much smaller setting than the familiar large-dam circuit. There is no need to make Anchuruli impersonate a dam-top tour. Its interest lies in seeing a transfer tunnel, cascade and reservoir edge together, then understanding how they connect to a system whose other structures are spread across the district.
The Kerala State Planning Board’s Economic Review 1985 describes Idukki Stage III as an augmentation scheme using adjacent streams. It records the completion of the Kallar–Erattayar and Erattayar–Idukki tunnels and states that partial diversion had begun in August 1984. This contemporary project account gives the tunnel a specific engineering history, rather than treating it simply as a recent adventure attraction.
The same review lists the Erattayar–Idukki tunnel as 3.8 km, whereas Kerala Tourism’s modern destination material describes Anchuruli as 5.5 km. These published figures are not silently combined or turned into a trek length. The common point is the connection from Erattayar into Idukki reservoir.
KSEB’s Periyar basin overview lists the Kallar/Irattayar diversion among Idukki’s associated works. The Irrigation Department’s later basin survey also identifies the upstream tunnel point and the diversion of water from the Kallar and Erattayar systems. Together they establish the working role that the scenic opening still represents.
See a water-transfer tunnel in its reservoir setting, with the opening, rock face and receiving channel visible as related features.
Compare the smooth circular section with the irregular rock and wooded slopes around it.
Read the exposed shoreline bands and curved promontories as evidence of changing reservoir levels.
Add an engineering and landscape stop to a Kattappana-side day without assuming access to a dam crest or power station.
Road km to Idukki; ghat roads and traffic vary — allow extra.
Choose daylight and a period without heavy rain or a local access warning. Lower reservoir levels reveal more of the curved banks, while wetter periods can bring stronger discharge and reduced access. The view depends on both weather and reservoir operation, so a month alone cannot guarantee a particular water level.
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Sun and moon are calculated for this location and shown in IST. Photography windows are the hour around sunrise and sunset; the sunset bearing is degrees clockwise from true north. Moon phase is accurate to about half a day.
These are official or public-sector eco offerings that match this place, town or forest destination. Confirm availability, permits, tariffs and reporting times with the official operator before travel.
Forest and reservoir wildlife sanctuary around the Idukki-Cheruthoni dam landscape.
Official source →
Idukki reservoir viewpoint and pilgrimage hill, connected with Kerala Forest Ecotourism listings.
Official source →Browse listed stays, food, activities, sights, shops and rentals around Anchuruli. Check each listing’s locality and contact the business directly for current arrangements.
Kerala Tourism destination record for Peermade Ayurveda, Panchakarma, herbal medicine, yoga and wellness stays.
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Kattappana is the useful nearby town base. Keep the approach separate from Cheruthoni dam, Kulamavu and Erattayar, which are different addresses in the hydel landscape.
20 more places around Idukki and Cheruthoni. Open a guide to plan the visit and onward journey.
A Peerumedu ridge walk through plantation and high-range scenery, with access dependent on the chosen trail, land permission and current weather.
The long pedestrian suspension bridge above the Idukki reservoir at Ayyappancoil, valued for water and hill views as well as the crossing itself.
A secluded waterfall below Kuttikkanam whose approach has depended on estate tracks and regulated jeep routes; current legal access must be established first.
The 138-metre concrete gravity dam a kilometre west of the Idukki arch dam, carrying the five radial gates that are the only spillway for the whole Idukki reservoir — the gates opened in a south-west monsoon for the first time on 9 August 2018.
The DTPC’s eight-acre garden and viewing park on the Vellappara shoulder above the Idukki reservoir, about 350 ft above the water. It is the dependable way to see the Idukki arch dam — strung between Kuravanmala and Kurathimala, roughly 1.6 km east-north-east — because the dam crest itself is shut most of the year and this is open every day from 08:00 to 19:00.
Reservoir-view hill point near Idukki and Cheruthoni, useful for scenic drives, photos and central high-range itineraries.
Waterfall on the Kochi-Munnar road, commonly paired with Valara as a high-range arrival stop.
Valara is the forest-framed Deviyar cascade beside NH85 between Neriamangalam and Adimali in Idukki. It is a separate roadside stop from Cheeyappara, with viewing from the road and no assumed access to the waterfall base.
Peermade, also written Peerumedu or Peermede, is a plantation settlement and highland landscape on the Kottayam–Kumily road in Idukki. The map uses the town centre as a visitor base, not a single hilltop attraction.
Meadow and hill-viewpoint landscape near the Peermade/Kuttikkanam side of Idukki.
Peermade-side hill-station and adventure-tourism area, useful for tea estates, pine roads and central high-range routing.
Kulamavu is KSEB’s gravity dam on Kilivallithodu and one of three dams forming the Idukki reservoir. Visit through the hydel-tourism arrangements; reservoir views do not authorise entry to restricted infrastructure.
Seven-step cascade and eco-tourism trekking spot on the Kaliyar river near Thodupuzha, with rock pools, forest paths and a Forest Department eco-tourism trail.
An Irrigation Department dam and reservoir at Muttom near Thodupuzha, storing Thodupuzha River runoff and Idukki power-station tailwater for the Muvattupuzha Valley Irrigation Project; the visitor park has its own permitted areas.
Protected forest around the Idukki and Cheruthoni reservoirs near Painavu, with hilly evergreen woodland, elephants and boat-and-trek access arranged through the Forest Department.
KSEB’s Panniyar-project dam at Konnathadi near Rajakkadu and Vellathooval in Idukki; a reservoir-and-engineering visit, distinct from Ponmudi hill station in Thiruvananthapuram.
The hill headquarters town of Idukki district near the arch dam, a quiet high-range base for Idukki–Cheruthoni dam-side sightseeing and the surrounding reservoir viewpoints.
A rock-and-grass viewpoint near Peermade on the Pambanar side of Idukki, overlooking steep wooded ravines; known as Eagle Rock and for the profile-like Tagore Rock formation.
Ghat viewpoint on the Thodupuzha–Puliyanmala road overlooking the Idukki high range, a popular stop for valley views and cool breezes.
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Add a nearby businessPhotography: A wider exterior frame can show the tunnel’s rock setting or the cascade entering the reservoir. Stay behind restrictions and do not copy an archival camera position inside the water passage.
Parking: Use the space accepted for visitor vehicles at the roadhead and leave room for turning. A marked parking capacity or permanent parking tariff is not verified; do not turn the access road or lower bank into an improvised parking area.
Keep the vehicle pickup at the same visitor roadhead. An outlet-side stop should not end with an assumed walk through the tunnel to Erattayar or across an exposed reservoir bank.
Checked 7 September 2026 against source 1source 2. Conditions change and surfaces vary with weather — if step-free access is essential, confirm with the site before you travel.
These services are listed within about 1.2 km of Anchuruli. Walking distances follow mapped routes; access and opening hours can change. Other services may be closer but are not included here.
Published emergency and visitor-assistance contacts. For an immediate emergency, call 112. Shared Kerala contact sources checked 4 October 2026; publication does not establish a tested live response.
Use Kattappana or a settled town stop for food before the local approach. Anchuruli is a reservoir-side visit, so a meal plan should remain attached to the road itinerary.
Explore food in Idukki and Cheruthoni →A town restaurant fits before or after the reservoir-side stop and keeps the meal separate from the lower viewpoint.
Take the break where a vehicle can stop properly, leaving the narrow final approach clear.
If staying outside Kattappana, arrange the evening meal with the property before returning from the reservoir circuit.
Reservoir-view hill point near Idukki and Cheruthoni, useful for scenic drives, photos and central high-range itineraries.
The long pedestrian suspension bridge above the Idukki reservoir at Ayyappancoil, valued for water and hill views as well as the crossing itself.
Protected forest around the Idukki and Cheruthoni reservoirs near Painavu, with hilly evergreen woodland, elephants and boat-and-trek access arranged through the Forest Department.
The Forest Department’s guided walk on the grass tops at the southern end of the Idukki Wildlife Sanctuary, about ten kilometres by road from Vagamon — some seven kilometres on foot up jeep track and open ridge, with the Idukki reservoir catchment below you. The state will not sell it to fewer than six people, and it will not take more than seven.
The 138-metre concrete gravity dam a kilometre west of the Idukki arch dam, carrying the five radial gates that are the only spillway for the whole Idukki reservoir — the gates opened in a south-west monsoon for the first time on 9 August 2018.
The DTPC’s eight-acre garden and viewing park on the Vellappara shoulder above the Idukki reservoir, about 350 ft above the water. It is the dependable way to see the Idukki arch dam — strung between Kuravanmala and Kurathimala, roughly 1.6 km east-north-east — because the dam crest itself is shut most of the year and this is open every day from 08:00 to 19:00.
The hill headquarters town of Idukki district near the arch dam, a quiet high-range base for Idukki–Cheruthoni dam-side sightseeing and the surrounding reservoir viewpoints.
The Kerala Forest Department ecotourism centre at Chellarkovil, with a watchtower, botanical and butterfly gardens and views towards the Tamil Nadu plains. Private resort viewpoints and waterfall approaches are separate visits.
Windy Idukki ridge and viewpoint area above the Tamil Nadu plains, often planned with wind farms and Nedumkandam-side routes.
Tortoise-shaped rock outcrop above Thovalappady on the Kerala–Tamil Nadu border ridge, reached by jeep track from the Thookkupalam–Ramakkalmedu road, with a two-mouthed passage under the rock and DTPC’s Jaalakam eco-tourism centre on top.
Road and walking figures are route estimates, with travel times dependent on access, traffic and conditions. Figures marked “straight line” show direct separation and do not describe a road or walking route. Fare estimates use Kerala’s 26 April 2022 auto/taxi notification and exclude waiting, night and applicable one-way surcharges. Confirm the current meter or operator quote before travelling. Routing: © openrouteservice.org by HeiGIT | Map data © OpenStreetMap contributors
Nearby toilets, pharmacies, ATMs, seating and vets are community-mapped and may be incomplete or out of date. Map data © OpenStreetMap contributors | Walking times © openrouteservice.org by HeiGIT
The destination combines the reservoir-side outlet of the Erattayar–Idukki tunnel, a short cascade and views of Idukki reservoir. It is not the Idukki arch dam, and the tunnel is an engineered water passage rather than a natural cave.
The diversion brings water from Erattayar towards Idukki reservoir. Anchuruli is the reservoir-side outlet.
Do not plan an interior walk. It is an operating water-transfer structure, and old photographs of people inside do not establish current permission or safe conditions. Keep to the permitted exterior viewing area.
The spellings refer to the same destination. Kerala Tourism records a local explanation involving five hill forms compared to inverted cooking vessels when reservoir water recedes.
Its practical approach is through the Kattappana–Kanchiyar side of Idukki. Cheruthoni is a separate part of the reservoir circuit; use Anchuruli’s own roadhead when arranging a pickup.
No fixed flow is promised. The visible cascade changes with discharge and reservoir conditions. Lower-flow and fuller-flow photographs show different states of the same outlet landscape.
Kerala Tourism states that exploration deeper into the forest requires prior Forest Department permission. The ordinary viewpoint visit does not include an unbooked forest route.
The lower approach includes uneven sloping ground and rock; a continuous accessible route is not established. Assess the permitted upper view from the roadhead and avoid a descent that would make the return difficult.
Choose daylight and a period without heavy rain or a local access warning. Lower reservoir levels reveal more of the curved banks, while wetter periods can bring stronger discharge and reduced access. The view depends on both weather and reservoir operation, so a month alone cannot guarantee a particular water level.
Approach the Anchuruli visitor side through the Kattappana–Kanchiyar area and use the named roadhead rather than a reservoir island marker. Anchuruli Thuruthu Island is a different point in the water. Begin with the permitted exterior viewpoint. Follow any barriers or staff directions before approaching the lower ground, and keep the return climb in mind if the path is wet. Treat a forest walk beyond the ordinary viewing area as a separate activity requiring the Forest Department’s permission. The tourism description does not provide a standing permit to explore the catchment or enter the tunnel.
Allow roughly one hour as a planning estimate for the permitted viewpoints and the walk back to the roadhead. Leave a separate allowance for the approach from Kattappana; this estimate does not include an interior tunnel walk or a forest trek.
Nearby you can pair Kalvari Mount, Ayyappancoil Hanging Bridge, Idukki Wildlife Sanctuary, Vagavanam Windy Walk trek.
Do not enter the water tunnel or stand in its discharge channel. Flow can be affected by conditions and operations beyond the visible outlet. Keep away from the cascade lip, wet sloping rock and soft exposed reservoir banks. A narrow dry strip in an old photograph is not a maintained path. Use the wider reservoir view if access to the lower approach is restricted. Swimming and crossing to exposed land are not part of this visit.
Written about Anchuruli itself — its history, its legends and the arguments about them.
These reads cover nearby destinations, each with its own arrival point and visit arrangements.
Route-level itineraries and practical guides for the rest of Kerala.
Photographs: Vis M (CC BY-SA 4.0), Swarnavilasam (CC BY-SA 4.0), ബിപിൻ (CC BY-SA 4.0), Department of Tourism, Government of Kerala (© Kerala Tourism), Alanjs (CC BY-SA 4.0), KSEB (CC BY-SA 2.5), Timothy A. Gonsalves (CC BY-SA 4.0), Wikistranger (Public domain), കാക്കര (CC BY-SA 3.0), Visakh wiki (CC BY-SA 3.0), Ezhuttukari (CC BY-SA 3.0), Vi1618 (Public domain), jiju M Iype (CC BY 3.0), Kiran Gopi (CC BY-SA 3.0), Kerala Irrigation Department (© Kerala Irrigation Department; official source photograph), Ingo Mehling (CC BY-SA 4.0), PranavMurali (CC BY-SA 4.0), Praveenp (CC BY-SA 4.0), Jaseem Hamza (CC BY 3.0), Kerala Forest and Wildlife Department (© Kerala Forest and Wildlife Department), Kerala Tourism (© Kerala Tourism; official destination photograph), Arshad.ka5 (CC BY-SA 4.0), Emmanuel P.Loui (CC BY-SA 4.0), Jayeshj at Malayalam Wikipedia / CC BY-SA 3.0 / Wikimedia Commons, Vis M / CC BY-SA 4.0 / Wikimedia Commons, Sibyperiyar / CC BY-SA 3.0 / Wikimedia Commons, Shinto Veleeparambil / CC BY-SA 4.0 / Wikimedia Commons, SYROSH MATHEW / CC BY-SA 4.0 / Wikimedia Commons, Timothy A. Gonsalves / CC BY-SA 4.0 / Wikimedia Commons, Praveenp / CC BY-SA 4.0 / Wikimedia Commons, Ashwin Kumar from Bangalore, India / CC BY-SA 2.0 / Wikimedia Commons, Ingo Mehling / CC BY-SA 4.0 / Wikimedia Commons, Rainer Halama / CC BY-SA 4.0 / Wikimedia Commons, My Guest Restaurant (Official website image), Igloo Heritage Resorts (Official website image), Kerala Hydel Tourism Centre (Official hydel tourism image). Wikimedia Commons.
