Photo by Yangguan Scenic Area - capturing ancient city gate architecture

Yangguan Scenic Area - capturing ancient city gate architecture

Photo by Yangguan Scenic Area - Yangguan Pass Seal Inscription Stele at Dawn and Dusk

Yangguan Scenic Area - Yangguan Pass Seal Inscription Stele at Dawn and Dusk

Photo by Gansu Yangguan Scenic Area - Aerial Photography of the Ancient Yangguan Pass

Gansu Yangguan Scenic Area - Aerial Photography of the Ancient Yangguan Pass