During the Bar Kokhba revolt against the Romans in 132–135 CE, Simon bar Kokhba and Rabbi Akiva wanted to rebuild the Temple, but bar Kokhba's revolt failed and the Jews were banned from Jerusalem (except for Tisha B'Av) by the Roman Empire. The emperor Julian allowed the Temple to be rebuilt, but the Galilee earthquake of 363 ended all attempts ever since. After the Muslim conquest of Jerusalem in the 7th century, Umayyad Caliph Abd al-Malik ibn Marwan ordered the construction of an Islamic shrine, the Dome of the Rock, on the Temple Mount. The shrine has stood on the mount since 691 CE; the Jami Al-Aqsa, from roughly the same period, also stands in what used to be the Temple courtyard. Archaeological evidence Archaeological excavations have found remnants of both the First Temple and Second Temple. Among the artifacts of the First Temple are dozens of ritual immersion pools in this area surrounding the Temple Mount, as well as a large square platform identified by architectural archaeologist Leen Ritmeyer as likely being built by King Hezekiah c. 700 BCE as a gathering area in front of the Temple. Concrete finds from the Second Temple include the Temple Warning inscriptions and the Trumpeting Place inscription, two surviving pieces of the Herodian expansion of the Temple Mount. The Temple Warning inscriptions forbid the entry of pagans to the Temple, a prohibition also mentioned by the 1st century CE historian Josephus. These inscriptions were on the wall that surrounded the Temple and prevented non-Jews from entering the temple's courtyard. The Trumpeting Place inscription was found at the southwest corner of Temple Mount, and is believed to mark the site where the priests used to declare the advent of Shabbat and other Jewish holidays. Ritual objects used in the temple service were carried off and many are likely located in museum collections, in particular, that of the Vatican Museums. Location There are three main theories as to where the Temple stood: where the Dome of the Rock is now located, to the north of the Dome of the Rock (Professor Asher Kaufman), or to the east of the Dome of the Rock (Professor Joseph Patrich of the Hebrew University). The exact location of the Temple is a contentious issue, as questioning the exact placement of the Temple is often associated with Temple denial. Since the Holy of Holies lay at the center of