pingo

noun
  1. A pingo is a mound of earth-covered ice found in the Arctic and subarctic regions that can reach up to 70 meters in height and 600 meters in diameter. It is formed when groundwater is forced upward and freezes, causing the ground to swell. noun
    The researchers studied the pingo to understand more about permafrost dynamics.
    As the climate warms, the stability of pingos in the region is becoming a concern.
  2. In geology, a pingo is a type of hydrolaccolith, which is a large, dome-shaped, ice-cored mound that forms in permafrost areas due to the pressure of groundwater. noun
    The formation of a pingo can significantly alter the local landscape.
    Pingos are important indicators of permafrost activity and climate change.