It is the largest of several glacial cirques found within the Xueshan mountain range.
The cirque was first formally identified by Japanese geologists during the colonial period in the early 20th century.
Despite Taiwan's subtropical location, the cirque's high altitude preserves periglacial features such as frost-shattered rock fragments.
The unique topography creates a microclimate that allows cold-weather plant species to thrive outside their typical northern latitudes.
Xueshan Cirque No. 1 is a premier glacial landform situated at an elevation of approximately 3,600 meters on the eastern slope of Xueshan Main Peak in Shei-Pa National Park. Formed during the Quaternary glaciation, it is recognized as the most distinct and well-preserved glacial cirque in Taiwan. The basin spans roughly 600 meters in width and 1,000 meters in length. It serves as a vital habitat for endemic alpine flora including the Yushan juniper and alpine azaleas. Hikers access the site via the Xueshan Main Peak trail, which requires passing through the Black Forest. The site provides geological evidence of Taiwan's historical tectonic uplift and past climatic shifts.
The ridgeline lookout overlooking the entire basin provides the most comprehensive panoramic view of the cirque's U-shaped structure.
Carry trekking poles to navigate the steep, rocky scree slopes surrounding the basin.
Monitor blood oxygen levels regularly, as the high altitude increases the risk of acute mountain sickness.
Ensure your thermal layers are accessible, as temperatures can drop significantly even during clear days.
Attempting the climb without a valid national park entry permit; ignoring afternoon fog patterns which can obscure the trail.
Accessible year-round, though snow accumulation in winter may require specialized climbing gear and restricted access permits.
Strictly follow Leave No Trace principles; remain on marked trails to protect sensitive alpine vegetation; noise levels should be kept low to respect the wildlife habitat.
