BBC Travel has a fascinating account of a journey to visit the ancient Christian churches of Ethiopia. These frescoed buildings are tucked away in thousand foot cliffs and require a physically (and mentally) challenging climb up hundreds of feet of rock. The caretakers guide visitors up heart-poundingly precarious sheer rock faces. Due to their isolated positions the churches are stunningly preserved and feature Orthodox frescoes.
Click here for more photos and an account of a journalist's pilgrimage to see these amazing sacred sites.
All photos from: http://www.bbc.com/travel/slideshow/20140814-in-ethiopia-an-adrenaline-filled-act-of-faith