The Gihon spring, flowing at the bottom of the Kidron Valley, was the primary water source of Jerusalem from the Canaanite period. The spring water was collected in reservoirs that were built along the Kidron Valley, one of them being the Siloam Pool. This pool served during the Roman period as a Pagan curing site named 'Gad Yon'. During the Byzantine period a church, commemorating the miracle of the curing of the blind man by Jesus, was built on site by Eudocia. This church was dismantled in the earthquake of 614, but it was still visited in the Islamic period by Christian pilgrims, such as Bernard the Monk (870). Al-Muqaddasi mentions the Siloam spring, and Nasir-i-Khusrau mentions its curing power. Around the spring were built structures intended for charitable purposes. A late Islamic tradition states that the water of the Siloam spring originates from the Garden of Eden.