The Holy of Holies is a term in the Hebrew Bible which refers to the inner sanctuary of the Tabernacle where God's presence appeared. The area was defined by four pillars which held up the veil of the covering, under which the Ark of the Covenant was held above the floor. The Ark according to Hebrew Scripture contained the Ten Commandments, which were given by God to Moses on Mount Sinai. King Solomon built the Temple in Jerusalem, where the Ark of the Covenant was supposed to be kept.
The Crusaders associated it with the Well of Souls, which is located under the Foundation Stone of the Dome of the Rock.
Wikipedia https://en.wikipedia.org/wiki/Holy_of_Holies
Coordinates 31°46'40.191" N 35°14'7.172" E