Terrapin Mountain is located southeast of Lake Magog in Mount Assiniboine Provincial Park and straddles the Continental Divide marking the Alberta-British Columbia border. It was named in 1918 for its resemblance to a turtle. A ridge extending north from the mountain terminates at Naiset Point.
Based on the Köppen climate classification, Terrapin Mountain is located in a subarctic climate with cold, snowy winters, and mild summers. Temperatures can drop below âÂÂ20 ðC with wind chill factors below âÂÂ30 ðC.