A large lake below the Vebhāra mountain, outside Rājagaha. The lake was cool, but the stream flowing from it, also called Tapodā, Vin.iii.108 Vin.iv.116f. was hot. Around it was the Tapodārāma.
Monks and recluses were evidently in the habit of going to the Tapodā to bathe in the hot springs. Thus, we find Samiddhi being questioned by a deity as he dried himself after bathing in the Tapodā, SN.i.8ff. MN.iii.192ff. and the Aṅguttara Nikāya AN.v.196f. records a discussion between Ānanda and the wanderer Kokanuda on the banks of the Tapodā, where they had gone to bathe.