The Thurahalli Forest or Thurahalli Park is a dry and deciduous forest. It is located about 20 km from Bengaluru off Kanakapura Road. It is 13 km from Banashankari and can be overseen from the NICE road. Entry inside the park has been banned for vehicles, however, it has become a hot spot for cyclists.
It has a nice view and a small Shani temple on top of a rocky hill. As of today, Thurahalli forest is said to be Bengaluru's only surviving forest.Rocks in the forest provide one of the few outdoor bouldering opportunities to the cities residents and have multiple established routes.
Wikipedia https://en.wikipedia.org/wiki/Turahalli_Forest
Coordinates 12°53'0.788" N 77°31'29.239" E