The cave contains the world's largest non-subglacial underground lake,[1] with an area of almost 2 hectares (4.9 acres).[2] The lake is located around 100 metres (330 ft) below the surface.[3] Its total depth is unknown, though exploration to date suggests it is at least 100 m.[4] Although it has been reported that the rare fish species, Clarias cavernicola, lives in the lake in the Dragon's Breath Cave, this is an error.