Kondana or Kondane caves(lenya) are ancient Buddhist caves situated in Kondiwade village of Karjat. Its a government preserved archeological monument and now being reconstructed.
A very good place to visit on weekends as it is one of the nearest tourist spots from Mumbai & Lonavala.
For more information, visit the below link:-
My Blog https://sidsweekendtravel.blogspot.in/2016/09/kondana-caves-kondane-lenya-karjat-5.html