Most of them miss Vaishali Cave during visiting Idukki Lake. It is one beautiful experience, the cave is locating near to the Idukki dam. Most of the scenes of film Vaishali (1988) shooted here, after that this place name changed to Vaishali Cave. We can see that the bats are sleeping in gangs here, which is a different view . From here we can view the beautiful Idukki Dam, but needs some risks.