Mahadev Madnir : Once you reach the top there is old temple of Mahadev.
How to reach :
To reach vasota fort you need to reach satara first, from there you to board bus to bamnoli . There is one bus per 1-2 hours to reach bamnoli. You can inquire for vasota fort and locals will guide you.
If you are coming by private vehicle then put "Vasota Trek Camping Site, Bamnoli" or on maps and ask local for direction once you cross kas lake. You need to take boat ride from and pay entry free.
Entry fee : 40 Rs per person
Boat charges : 3600 per boat with guide charges which is compulsory , it can take 12 people.
You can reach bamnoli in evening if you want to camp lakeside, locals provide food and tent at nominal charges.
Things to carry:
2 ltr water each as there is no stalls or water available in whole trek
dry snacks or biscuit
My experience :
It was my first trek in month of hottest month of summer "May". We we less interested in camping as we have done same on Rajmachi and Hasrishchandragad before this trek, Also it was month of May so camping was not so great option, so we decide to leave Pune in early morning. We booked a car with driver. By coincidence he also loved to do treks which we realized in conversation with him. So we were five people myself, prashant, sagar, abinash, santosh (driver).
We reached bamnoli by 10 am , paid the entry fee boat charges. We were all set for 80 minutes boat ride, View in route of koyan backwaters and surrounding area was just amazing.