Kothaligad, also known as Peth Fort, is located 21km northeast of Karjat near the village of Peth. The small fort has an illustrious history, serving as an important ammunition storage site during Sambhaji's era. In 1684, Mughal forces captured the fort after tricking the Marathas guarding it. They held it for over a year before the Marathas recaptured it. The fort offers scenic views of the surrounding area and has caves and water cisterns within. It can be accessed via a tiring pathway from Peth village.