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http://users.stlcc.edu/mfuller/Medieval/AlKahf.html Between 1164, and 1190, this was supposedly the headquarters of Rashid al-Din Sinan, called the "Old Man of the Mountain" in Christian sources. While it seems a long way from Aleppo, the influence of charismatic Sinan extended across Northern Syria. Ibn Jubayr writes, as he is leaving Aleppo, "Beyond... are the mountains of Lebanon, of towering height and great length, extending along the sea coast. On their slopes are castles belonging to the heretical Isma'ilites, a sect which swerved from Islam and vested divinity in a man. Their prophet was a devil in man's disguise called Sinan ... He bewitched them with these black arts, so that they took him as a god and worshiped him ... reaching such a state of obedience and subjection that did he order one of them to fall from the mountain top he would do so." While Ibn Jubayr's account is colored by prejudice, he has his facts right -- the Assassins, or the Nizaris, as this particular Syrian group of Isma'ilites is called, after Nizar al-Mutansir, who died attempting to claim the Fatimid kingdom. The Nizaris believed that Nizar was indeed not dead, and would return with (or as the man himself) the Mahdi, a superpowered savior figure, greater than Muhammad, that would bring about the end of time.