Archaeological Findings from the Second Temple - Wikipedia
After 1967, archaeologists found that the wall extended all the way around the Temple Mount and is part of the city wall near the Lion's Gate. Thus, the Western Wall is not the only remaining part of the Temple Mount. Currently, Robinson's Arch (named after American Edward Robinson) remains as the beginning of an arch that spanned the gap between the top of the platform and the higher ground farther away. This had been used by the priests as an entrance. Commoners had entered through the still-extant, but now plugged, gates on the southern side which led through beautiful colonnades to the top of the platform. One of these colonnades is still extant and reachable through the Temple Mount. The Southern wall was designed as a grand entrance. Recent archeological digs have found thousands of mikvehs (ceremonial bathtubs) for the ritual purification of the worshipers, as well as a grand stairway leading to the now blocked entrance. Inside the walls, the platform was supported by a series of vaulted archways, now called Solomon's Stables, which still exist and whose current renovation by the Waqf is extremely controversial. The temple itself was constructed of imported white marble that gleamed in the daylight.
On September 25, 2007 Yuval Baruch, archaeologist with the Israeli Antiquities Authority announced the discovery of a quarry compound which may have provided King Herod with the stones to build his Temple on the Temple Mount. Coins, pottery and an iron stake found proved the date of the quarrying to be about 19 BCE. Archaeologist Ehud Netzer confirmed that the large outlines of the stone cuts is evidence that it was a massive public project worked by hundreds of slaves.