Views down the valley to the Miyun Reservoir. Tianmenshan Loop hike, 2022/09/24 See 26 photos from a big hike at Tianmenshan, starting with a walk on wild trails in the mountains and finishing with the big stairclimb up to the Tianmenshan rock arch. Were you on this trip? How did you like it? We'd love to hear from you. • Send us feedback • Review it on TripAdvisor • Share this page on Facebook Hiking up to the trailhead. Heading up into the valleys. The rock arch can just be seen in the cliffs opposite. A stream in one of the wild valleys. A garden of stinging nettles. Birch trees. About to cross over the second pass. On the other side, views of the Miyun Reservoir. Cliffs and crags. The dip in the hills is the third pass. We bumped into a farmer carrying out a load of chestnuts—40kgs, he said. The start of the stairs to the rock arch. The rock arch. At the top, looking through the arch. Views of the Miyun Reservoir. Cliffs on the other side of the arch. Car park cat. Car park dog. Car park picnic.