Towering mountains are often breathtaking, but these images have something more. Swiss photographer Robert Bösch has been traveling to snowy, high-altitude peaks – often bringing along a huge crew of mountaineers that can number in the hundreds. There, the red suited crew create impressively choreographed images that interact with the tall peaks, sheer cliffs and white snow fields that surround them. No. None of these images are digitally manipulated.

Bösch was recently hired by Swiss outdoor equipment company, Mammut, to mark the 150th anniversary of the first ascent of the Matterhorn in the Alps by Edward Whymper. The resulting image (above) sees a team of climbers navigating the same Hörnli ridge used on the first successful ascent, illuminating it in the early dawn with bright red lights.

See more examples of Robert Bösch’s fantastic work on his personal website and below.