Coordinates: 23°29′2″N 70°27′43″E / 23.48389°N 70.46194°E Kanthkot fort is located near Kanthkot village, Bhachau Taluka of Vagad area, Kutch, Gujarat.
Kanthkot is an old fort on the top of an isolated rocky hill about three miles (5 km) in circumference, has walls built of massive blocks repaired in many places by smaller stones. It is said, in the eighth century, to have been the capital of the Kathis and to have been taken from them by the Chavdas.
According to the local story the present fort was begun about 843 (Samvat 900). A part of the wall crossed the fireplace of the great ascetic Kanthadnath, who in anger destroyed it. Then the builders appeasing the ascetic called the fort after his name, and were allowed to finish it. About the middle of the tenth century, under the name Kanthadurg, it appears as the place to which Mulraj of Anhilwad Patan fled when pressed (950) by Tailap of Kalyan Ketah. In the eleventh century (1024) it is believed to be the fort Khandaba, forty parasangas from Somnath and between that place and the desert, where Bhima I sought shelter from Mahmud Ghazni. About the middle of the twelfth century (1143) the Raja of Kanthagam, probably Kanthkot, from the west is mentioned as joining the Nagor chief against Kumarapala of Anhilwad Patan.