To celebrate the 150th anniversary of the first ascent of the Matterhorn ridge in the Alps by Edward Whymper and his team, Mammut, a Swiss mountaineering equipment company, asked photographer Robert Bösch to take a special photo to mark the occasion for the brand’s 2015 ad campaign. A team of mountain climbers ascended the Matterhorn’s Hörnli ridge and lit bright red lights that, at dawn, illuminated the path that Whymper took with his team to make the first successful ascent.