The most remote of the Assassin castles and not easy to find even today. The Regent of Jerusalem was invited to the castle in 1197 to try and reach agreement with the Assassins in combating Muslim power. It is said that as an example of the fanatical devotion the adherents had for their leadership, when two of them were asked to throw themselves off the side of the castle parapet they promptly did so. Al-Kahf fell to Sultan Baibars in 1273 - the last Assassin redoubt to fall. A final snippet - in 1816 Lady Hester Stanhope, an eccentric English aristocrat living in Lebanon asked the Ottoman Governor of Tripoli to demolish it when she found out a French captain had been detained
there. He obliged her.