Tim Fitzharris / Church Rock, volcanic neck formation with view into Monument Valley, Arizona

Tim Fitzharris / Lightning strike near rock formation, Church Rock, Red Rock State Park, New Mexico

Juan Carlos Munoz / Lavender (Lavendula angustifolia) fields in front of Senanque Abbey, Gordes Village, Provence, France, July 2015.

Inaki Relanzon / Ruined church of Saint Vincente, Finestres, Montsec de l'Estall, Aragon, Spain. December 2012.

Laurent Geslin / Christian worshipper near St Sauveur's church, Lalibela, North Ethiopia. These worshippers stay for hours in a hole in the carved rock to read their holy books., 2006

Laurent Geslin / Christian worshipper near St Sauveur's church, Lalibela, North Ethiopia. These worshippers stay for hours in a hole in the carved rock to read their holy books, 2006

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...

Chris Mattison / Yellow bloodstain lichen (Haematomma ochroleucum ochroleucum) on headstone The Old Church churchyard, Penallt, Monmouthshire, Wales, UK. November.

Juan Carlos Munoz / Cyclist looking at view of Seven Churches and countryside beyond. Inishmore, Aran Islands, County Galway, Republic of Ireland. May 2011.

Nick Upton / Basilica de Santa Maria la Real, built from pink limestone, on a tree covered hilltop, Covadonga, Picos de Europa, Asturias, Spain, August 2016.

Ashley Cooper / Black Church Rock near Clovelly in Devon, England, UK, June.

Ashley Cooper / Black Church Rock near Clovelly in Devon, England, UK, June 2006.