A climber ascending a cave archway at Foxhole, Gower Peninsula, Wales, United Kingdom, Europe

Monks' cells cut into the hillside rock among the Udayagiri and Khandagiri caves dating back to over 100 years BCE sculpted as religious retreats for Jain devotees, Bhubaneswar, Odisha, India, Asia

Cave Church, Pigeon Valley, Goreme, Cappadocia Region, Nevsehir Province, Anatolia, Turkey, Asia Minor, Asia

Archway Cave, segment of very large lava cave, Undara Lava Tubes National Park, Queensland, Australia, Pacific

Natural rock archway carved by the sea through karst limestone rock at Cuevas del mar (sea caves) beach, near Llanes, Asturias, Spain.

Rock gate Geisskirche, passage cave, mystical, hamlet Tuerkelstein, district of Goessweinstein, Upper Franconia, Franconia, Bavaria, Germany, Europe

Banff National Park, Alberta, Canada