North of the island, on the banks of the Cauvery, is this well-preserved 18th-century white-walled dungeon used to hold British prisoners of war, including Colonel Bailey who died here in 1780. Jutting out from the walls are stone fixtures used to chain prisoners. East along the river from here is Thomas Inman’s Dungeon , hidden away beneath undulating terrain, with a more undiscovered feel that’s fun to explore.
