14138221 - Braided river ecosystem snakes through the tundra and is used by salmon spawning. Salmon bring marine-derived nutrients from the Kamchatka shelf in the Sea of Okhotsk into the eight major river systems that run off the middle range of mountains that divide Kamchatka in half; Kamchatka, Russia70475073 - Young man and boys on motorcycles at motocross70475074 - Group of boys on motorcycles at motocross start line
