Talik

A talik (from p=ˈtalʲɪk, derived from the verb tayat, to melt) is a layer of year-round unfrozen ground that lies in permafrost areas. In regions of continuous permafrost, taliks often occur underneath shallow thermokarst lakes and rivers, where the deep water does not freeze in winter, and thus the soil underneath will not freeze either. Somet...
Found on http://en.wikipedia.org/wiki/Talik

Talik

An unfrozen section of ground found above, below, or within a layer of discontinuous permafrost. These layers can also be found beneath water bodies in a layer of continuous permafrost. A number of different types of talik have been distinguished: closed talik, open talik, and through talik.
Found on http://www.physicalgeography.net/physgeoglos/t.html
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