This cutaway drawing of the Dome of the Rock shows The Rock around which this Islamic structure is built. The Rock, shown in yellow, was the Foundation Stone of the First and Second Temples on which the Holy of Holies was built.
Below The Rock are steps that descend into a cave called al-Maghara. Typologically, this cave belongs to the same group of underground tanks as the cisterns, but was never included in the numeration of Warren, presumably because of its unique location. This cave, which is not plastered, has a circular shaft in its roof.