Where are the rock-hewn churches of Lalibela?

Lalibela has 11 medieval churches carved directly downward into solid volcanic rock, traditionally credited to King Lalibela of the Zagwe dynasty in the late 12th and early 13th centuries. Rather than being built from blocks, each church was cut out of the ground as a single piece, with windows, doors and rooms carved inside. The most famous, the Church of Saint George (Bete Giyorgis), is shaped like a cross and sits in a pit about 12 metres deep. The churches are still in active use and draw thousands of pilgrims, especially at Ethiopian Christmas (Genna). They were among the first sites added to the UNESCO World Heritage List in 1978.