If any of you go to Lonavala ...

[PoBoy]

... and want to do something 'different' :

https://sites.google.com/site/gbraopics/home/pics/cave-near-valvan-dam-lonavala

it involves a small walk/trek btw.

 

[Flash!]

Nice. But, also take safety precautions while visiting such places. Don't go alone, you'll never know what'll happen.