I often go for trekking to mountains and forts in and around Pune. Its fun, I get to know a new place, get to know history, and its a good exhausting activity for a person who just sits whole day pressing buttons on the keyboard! (Here I am using keyboard to type this blog post. :)) Recently I went to Neelkantheshwar, which is around 50 km from Pune. The name of the hill comes from Lord Shiva whose temple is there on the mountain (by the same name). There are sculptures depicting various prasangs of Ramayana, Mahabharat and Hindu mythology.
Here are some of the pictures of the trek.