igikeltsa alal pinnases leiduva vee külmumisest ja pinnase kerkimisest tingitud ajutine positiivne jääst tuumaga pinnavorm, hummock on the land surface that occurs due to buried ice lenses growth in permafrost area and which collapse after 5-7 yrs. Pingos formed in mineral soil are usually larger compared to palsas in peat.

igikeltsa alal pinnases leiduva vee külmumisest ja pinnase kerkimisest tingitud ajutine positiivne jääst tuumaga pinnavorm, hummock on the land surface that occurs due to buried ice lenses growth in permafrost area and which collapse after 5-7 yrs. Pingos formed in mineral soil are usually larger compared to palsas in peat.