Gavin Hellier / Church Priest holding a Lalibela Cross, Lalibela and its rock-hewn Churches rank among the greatest religio-historical sites not only in Africa, but in the Christian world, Lalibela, Ethiopia 2005. Mo...

Gavin Hellier / Priest in Bet Danaghel Church holding the Cross of King Lalibela. The rock-hewn churches of Lalibela make it one of the greatest Religio-Historical sites not only in Africa but in the Christian World...

Gavin Hellier / Religious wall hanging in the rock-hewn church of Bet Gabriel-Rufael, Lalibela is a centre for pilgrimage and ranks among the worlds greatest religio-historical sites, Lalibela, Ethiopia 2005

Gavin Hellier / The most famous of Lalibela's Rock Hewn churches, The Sunken Rock Hewn church of Bet Giyorgis, 'St. George', dating from the 12th Century, Lalibela and it's rock-hewn Churches rank among the greatest...

Gavin Hellier / Church Priest holding a Lalibela Cross, Lalibela and it's rock-hewn Churches rank among the greatest religio-historical sites not only in Africa, but in the Christian world, Lalibela, Ethiopia 2005

Gavin Hellier / Aerial photograph of the Tufa rock formations and landscape including the Rock Church of St John the Baptist in Cavusin, Cappadocia, Anatolia, Turkey, 2008

Gavin Hellier / Frescoes in Goreme Open Air Museum's rock-cut Byzantine Tokali Kilise (Buckle Church), Goreme, Cappadocia, Anatolia, Turkey, 2008

Gavin Hellier / Priest in Bet Danaghel Church holding the Cross of King Lalibela. The rock-hewn churches of Lalibela make it one of the greatest Religio-Historical sites not only in Africa but in the Christian World...

Tim Fitzharris / Church Rock, Monument Valley, Arizona

Loic Poidevin / St Mickael's church, one of the rock churches of Tigray dedicated to St Michael, Atsbi village, Ethiopia, February 2009

Angelo Gandolfi / Cave church of Saint Sebastiano. An Etruscan "via cava" (Hollow road), cut into tufa rock. Tuscany, Italy. November 2008

Angelo Gandolfi / The interior of the church / hermitage / stone chapel of Poggio Conte, excavated in tufa rock and painted. Lazio 'Maremma', Italy. April 2009

Angelo Gandolfi / Entrance to the church / hermitage / stone chapel of Poggio Conte, excavated in tufa rock and painted. Lazio 'Maremma', Italy. April 2009

Chris Gomersall / Saint Columba's Presbyterian church and Canna House, Isle of Canna, Small Isles, Hebrides, Scotland, June 2008

Angelo Gandolfi / Riglos Church at the foot of the Mallos de Riglos cliffs, Aragon, Spain. June 2008.

Fabio Liverani / A rock carved church in front of Madonna delle Croci, Sassi di Matera, Basilicata, Southern Italy, June 2009

Fabio Liverani / Painting of Adam and Eve in Eden from the (first half of 9th century) Cripta del Peccato Originale, in a rock church near Sassi di Matera, Basilicata, Southern Italy, June 2009

Inaki Relanzon / The tiny church of Saint Joan de Cornudell on an outcrop of folded rocks. Bergueda, Catalonia, Spanish Pyrenees

Tim Fitzharris / Church Rock, eroded volcanic plug 300 feet tall on Navajo reservation, Monument Valley, Arizona

David Noton / Looking through rock arch to sunset over sea, Church Cove, the Lizard, Cornwall, UK

Tim Fitzharris / Church Rock, eroded volcanic plug reaching 300 feet, Navajo Reservation, Monument Valley Navajo Tribal Park, Arizona

Luiz Claudio Marigo / Natural rock formation on Igreja / Church Hill, São Joaquim National Park, near Urubici town, Santa Catarina State, Southern Brazil.

Mike Read / Chapel at Ubine Mont Chauffe (2093m) Haute Savoie Alps France