Sangzhi fills Zhangjiajie's northwest on the Hubei border, a county of ten thousand hills that sent Marshal He Long into the world. Its ridges keep the tusi past, the Tujia calendar and a Bai minority presence that surprises visitors.
Baofeng Lake exists because villagers dammed a gorge for electricity in the 1970s. The Tujia village whose fog gave the valley its name still sits on the shore, inside a scenic area that adopted the water as scenery.
Huanglong Cave runs fifteen kilometres under the sandstone district of Wulingyuan, and one of its two underground rivers carries visitors by boat. The cave explains the other half of the district's geology — and the million visitors a year explain its management.
The Yuntiandu bridge crossed a Zhangjiajie gorge on glass in August 2016 and became the world's longest glass bridge — for thirteen days, until its own visitors forced it to close. The story of the span is also a story about crowd control.
Tianmen Mountain carries a natural arch that records say opened in the year 263, a French-built cableway from 2005 and glass walkways added in 2016. Each layer of engineering arrived in a different decade, each aimed at a different kind of visitor.
How water turned a Devonian quartz sandstone into three thousand standing pillars, and how three quarrelling counties were merged into the park that now shows them. The entrance gates, the lifts and the villages inside the boundary all came after the rock.