These landforms are characterized by patterned ground.
Yedoma is a variety of these formations with a high proportion of trapped greenhouse gases. These landforms are characterized by patterned ground. They are classified by the USGS as gelisols and may be interrupted by taliks. Degradation of these formations can lead to thermokarst processes and "drunken forests" due to subsidence. They are overlain by an active layer which is the only portion of the (*) soil horizon able to support plant life, due to seasonal thawing. For 10 points, give this name for continually frozen soil.
Yedoma is a variety of these formations with a high proportion of trapped greenhouse gases.
{permafrost}