Zedekiah's Cave—also called Solomon's Quarries—is a 5-acre (20,000 m2) underground meleke limestone quarry that runs the length of five city blocks under the Muslim Quarter of the Old City of Jerusalem. It was carved over a period of several thousand years and is a remnant of the largest quarry in Jerusalem, stretching from Jeremiah's Grotto and the Garden Tomb to the walls of the Old City.[1] The cave has great historical importance in Freemasonry.