normally occur in unglaciated terrain. Pingos usually grow only a couple of centimetres per year, with Ibyuk Pingo growing at a rate of 2 cm (0.79 in) a...

1 mi) west of Tuktoyaktuk, and includes Ibyuk Pingo—Canada's highest, exceeded in height only by Kadleroshilik Pingo in Alaska—at 49 m (161 ft). The Landmark...

of scientific interest." To date, only one Landmark has been established—Pingo National Landmark—in the Northwest Territories. Another was proposed at...

" The enabling legislation expired 10 years later, and was not renewed. Pingo National Landmark was the only such unit established in that time. Provincial...