Ninety-seven courtyards in stone
Yanchuan's Zhenjiawan keeps 97 courtyards and 258 caves—the largest complete ancient yaodong complex surviving in northern Shaanxi.
Yan'an lies in the northern belt provincial geography describes as the gullied loess plateau of northern Shaanxi, distinct from the Guanzhong plain and the Qinba mountains to the south. Yanchuan County preserves a stone-cut yaodong complex; Yichuan County shares the Hukou waterfall scenic area with Shanxi across the river.