Sondai is not such a famous fort near Karjat Chowk Phata. Sondai Fort Trek is nine kilometers from Karjat railway station. It offers a beautiful view of Morbe Dam, Prabalgad, Irshalgad, Rajmachi, Songiri forts, Karnala Fort, and the Matheran mountain range. Sondai Fort Karjat was used as a watchtower to protect the trade routes. Sondewadi and Wavarle are the base villages of Sondai fort. Sondewadi village is situated at 1/4th height of this Fort.

There are two water cisterns on, and steps are carved out of rocks to go to the topmost point where an idol of Sondai Devi stands. Two more water cisterns are on the way and have potable water. Waverle is another village from where a bit difficult approach to the fort passes through the dense forest. Sondai trek, an iron ladder, has been installed. It has made the climb to the summit to seak the blessing of Sondai Devi temple safer for all the hikers and devotees.