The Pune xlgroup is planning a Trip Out this 15th March. Venue of the Trip is yet to be decided, I have suggested Garudmachi - 75 Kms from Pune, 140 kms from Mumbai.
This link will give an idea about Garudmachi:
This link has the maps of reaching to Garudmachi from Mumbai and Pune
The Arrangements described in the webpages are property of High Places consultancy who run their Outdoor Training and Management Development centre at Garudmachi.