These rock churches in Ethiopia are made by carving out of a single rock, interesting...http://www.amusingplanet.com/2014/04/the-rock-churches-of-lalibela.html
![churches-lalibela-1[2].jpg](https://www.seniorforums.com/data/attachments/3/3961-0f46cb8af9fc1c34de07ba60187590bf.jpg "churches-lalibela-1[2].jpg")
