Zedekiah's Cave, also 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.