This rainbow cloud over Mount Everest took Oleg Bartunov, 51, by surprise. He caught the spectacle on camera during a Himalayas expedition in Nepal. His two images show almost the whole spectrum of the rainbow in a natural event rarely recorded at Mount Everest.
Climbers descend from the summit of Mount Everest on May 10, 1996, as the clouds of a storm that killed several other climbers that day gather below them (right). Source: Scott Fischer/Woodfin Camp and Associates.