Padmadurg is a fort in Maharashtra, India. It is also known as Kasa fort. It was built by king Sambhaji - son of the great Maratha ruler king Shivaji to northwest of the fort Janjira - built mainly to conquer the fort Janjira. Although it is not as big as Janjira but still a sea fort that can be visited upon permission by Indian Customs\Navy. It looks great from Janjira. There are no direct ferryboats to Padmadurg. Visitors have to hire a personal ferryboat. Due to incomplete construction, bombarding from Janjira during its construction, only ruins of the Padmadurg fort remain. Many parts of the fort are now inaccessible.This fort is under a seal by Indian Government as it has been claimed that the drugs were smuggled there.