Geysir geyser fumarole volcanic lava field. Iceland

Old Man's Cave Hocking Hills State Park, Logan Ohio

General view:Dar es-Soltan 1 Cave Environs. Rabat Morocco

The entrance to Farcu Mine Cave Crystal from Rosia

Cave of Salt on Moon Valley, Atacama Desert, Chile

Maison de la Haute Seille - la cave - Château Chalon

Maison de la Haute Seille - la cave - Château Chalon

Urgup Ayvali

Inside Ik-Kil Maya Cenote, Mexico

at the top - Wat Tham Suea

Nadam locality, municipality of Liebvillers

České Švýcarsko - ledopád Varhany

Reutlingen, Bronnweiler, Alteburg, observation tower Käpfle, wooden building and nature, spring with snow at the edge of the Swabian Alb 3067

Reutlingen, Bronnweiler, Alteburg, observation tower Käpfle, wooden building and nature, spring with snow at the edge of the Swabian Alb 3084

Reutlingen, Bronnweiler, Alteburg, observation tower Käpfle, wooden building and nature, spring with snow at the edge of the Swabian Alb 2867

Reutlingen, Bronnweiler, Alteburg, observation tower Käpfle, wooden building and nature, spring with snow at the edge of the Swabian Alb 3045

Quimper, allee de kervoalic, hollow way, deciduous trees and ferns in autumn, and ferns as in spring, against the light 2038

Tsuboyu in Yunomine Onsen. Japan

Luning (aerial)

Garden Valley (aerial)

Spring in Peñalara - Madrid

Mineral spring in Streženice

Pogorzelica - Beach - Spring 2012

Hymettus Mount during Spring