Caaba (or Kaaba). A small oratory in the middle of a large area surrounded by galleries and arcades of the Great Mosque at Mecca. It is 38 feet long 30 feet wide, and 35 feet in height, the door being 7 feet above the ground, and it is the holy place in the Temple, containing the Cubical Stone, which, originally white, grieved so long for the sins of hu­manity that it turned, first, opaque and, then, black. The inner Caaba, containing the stone, is surrounded by a veil of black silk, which is opened but three times a year, when it is approached by none but faithful Mohammedans. The stone is claimed to have been given by Gabriel to Abraham, but accord­ing to Syed Ahmed (History of the Holy Mecca, London, 1870), the stone is from mountains in the vicinity of Mecca. It owes its black color to the ef­fects of fire and was originally one of the numerous altars used in ancient stone-worship.