OSM town way 84737219 fixes the Perambalur anchor and fort way 292493479 fixes Ranjankudi. OSRM measures 17.42 kilometres by public road; it is an excursion, not a town walk.
Read levels, not legends
Follow the moat, gateways, bastions and rising enclosures to understand defence. Do not enter unstable rooms or climb parapets.
Place the battle carefully
The 1751 fighting belongs to the Carnatic Wars and Indian alliances as well as European company rivalry. Avoid a one-line conquest story.
Return before heat wins
Go early, carry water and arrange the return before leaving Perambalur.