Juergen Freund / Tubbataha Reef ranger station in a storm with a full arch rainbow against the dark clouds. Tubbataha Reef National Marine Park, Palawan, Philippines, April 2009.

Pete Oxford / Ranger Station number one and Dwarka Singh Ranger at the Kurupukari entrance into the Iwokrama Forest, Iwokrama Forest Reserve, Guyana, January 2010

Igor Shpilenok / Ranger station next to Valley of the Geysers, Kronotsky Zapovednik Reserve, Russia. Note - where photographer Igor Shpilenok lived for several months whilst photographing in the reserve.

Igor Shpilenok / Siberian Chipmunk {Eutamias sibiricus} feeding. Khingasky Zapovednik, Russia.

Igor Shpilenok / A ranger station floats at the mouth of the Golaya River, Sayano-Shushensky, Russia.

Igor Shpilenok / A ranger station on the edge of Teletskoye Lake in the Altai Mountains, Russia.

Igor Shpilenok / A park ranger station in snow near Teletskoye Lake, Russia.

Igor Shpilenok / Storm gathers over Teletskoye Lake and ranger station in southern Siberia, Russia.

Roberto Rinaldi / Ranger station in the marine reserve on Tubbataha reef, Philippines.