What is "Rock-Hewn"

Lalibela is famous for it's churches, which bring both Ethiopian Orothodox pilgrims and European tourists to the town in droves. The churches are hammered out of solid volcanic tuff rock … not rocks, but rock. One rock. The colums you see in brick were added by the Italians for preservation in the '40s. Lalibela is a UNESCO world heritage site

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