Qara Kelisa (Black Church) is surrounded by Iranian Christians' tents, in Chaldran, 510 miles (850 kilometers) northwest of the Irania capital Tehran, Saturday, July 29, 2006. Annually around 4,000 Iranian Christians, mostly Armenians, gather in a three-day ceremony marking the death anniversary of Saint Thaddaeus. (AP Photo/Vahid Salemi)

Iranian Christians pray and light candles in a ceremony at the Qara Kelisa (Black Church) in Chaldran, 510 miles (850 kilometers) northwest of the capital Tehran, Saturday, July 29, 2006. Annually arround 4,000 Iranian Christians, mostly Armenians, gather in a three-day ceremony marking the death anniversary of Saint Thaddaeus. (AP Photo/Vahid Salemi)