Phia Oac (or Phja Oac as the locals call it) is located in the Non Nuoc Cao Bang Geopark system, which was recognized by UNESCO as a Global Geopark in April 2018. Phia Oac is 1,931m high, the second highest mountain peak in Cao Bang, and is considered the "roof" of the western part of the province. The diversity of terrain, geology, and typical climate conditions have created unique ecosystems for this mountainous area. The diverse vegetation changes with altitude from the foot to the top of the mountain, especially the highlight of the dwarf forest ecosystem, the "moss forest" clinging thickly to the ancient tree trunks. The higher you go, the more spectacular the mountains and rivers spread out as far as the eye can see. From the top of Phia Oac, looking far away, you can see the houses of the Dao, Nung, and Tay people. In the distance, the Quang Thanh River meanders as if embracing the land and sky of the frontier.
Heritage Magazine
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