Kothligad (or Peth) is a hill fort in Maharashtra. It is located at a modest elevation of 1500 feet in the Raigad district of the state. The pinnacle of the fort is shaped in the form of a vertical funnel, lending it a peculiar look. There are caves carved out of huge rocks at the top of the fort, alongside a pond perfectly square in shape. The veryical tunnel has large cool rooms and spacious caves, along with the staircases which lead to the top. This is one of the most popular treks in town and you should definitely include it in your topmost things to do in Karjat.