Kanakdurg fort is spread over about of 0.25 hectares. The fort is in complete ruins now except for a few things like water tanks, two dilapidated bastions and a beautiful lighthouse. Kanakdurg Fort was built to protect Suvarnadurga slong with Fattegad and Gova fort. Kanakdurga is built on a huge rock and there are rock steps to ascend the fort. There is a lighthouse on the fort. To the left side of the steps is a strong bastion built in black rock.

Kanakdurga fort (headland fort) projects into the sea, adjoins the Harnai port and is spread over an area of 0.25 hectares (0.62 acres). It is approached through a flight of steps. This fort is now in ruins, except for a few water tanks, two dilapidated bastions (one at each end), a lighthouse on elevated ground, and also a residence for the caretaker. It was also once a military camp. The fort has nine water ponds with abundant water supply, of which eight are separated by stone walls and the ninth pond is a little away to the west.