Dall sheep / Ovis dalli on Tachal Dahl (Sheep Mountain), St. Elias Mountains, Kluane NP, Yukon, Canada.
Dall sheep (Ovis dalli, or thinhorn sheep) on Tachal Dahl (Sheep Mountain) Ridge, St. Elias Mountains, in Kluane National Park and Reserve, Yukon, Canada. Hike Sheep Creek trail (10-15 km with 500-1200 m gain) for spectacular views of the Slims River Valley and surrounding mountains, plus Kluane Lake seen from Soldier's Summit on Tachal Dahl (Sheep Mountain) Ridge. In a startling case of global warming, over 4 days in spring 2016, the Slims River suddenly disappeared, leaving windswept mud flats creating clouds of dust in the formerly clear air. With its main water supply cut off, Kluane Lake will be isolated within a few years, shrinking below its outflow into the Kluane River (which flows into the Donjek River, White River, Yukon River, and eventually the Bering Sea). Kluane Lake chemistry and fish populations are rapidly changing. For the last 300 years, abundant meltwater from the Kaskawulsh Glacier has been channeled by ice dam to drain via the 150-meter wide Slims River, north into Kluane Lake. Between 1956 and 2007, the Kaskawulsh glacier retreated by 600-700m, which most scientists attribute to anthropogenic climate change. Meltwater flooding from accelerating retreat in 2016 carved a new channel through a large ice field, diverting all flows to the Kaskawulsh River, a tributary of the Alsek, which flows into the Gulf of Alaska. This image was stitched from multiple overlapping photos.Add to Cart Add to Lightbox Download