Kalavantin Durg is a 2,250 ft (686 m) high summit located in the Western Ghats, near the Prabalgad fort in the Raigad district of Maharashtra, India.

It is also known as Kelve Teen, Kalavantinicha Sulka, or Kalavantin Pinnacle; alternative transliterations include Kalawantin, Kalavati, and Kalavanti.

After Prabalmachi village (2 km; 1¼ miles from Thakurvadi), the hike route diverges into two paths: the shorter one towards Kalavantin Durg, and the longer one towards Prabalgad fort.

[2] The route to the Kalavantin top is a roughly 60-degree incline, and involves climbing rock-cut steps that are as high as 2 feet.

[1] In December 2016, 27-year old Hyderabad-based trekker Rachita Gupta Kanodia died during a trek to Kalavantin Durg and Prabalgad.