Lithalsa

{{short description|Frost-induced raised land form in permafrost areas}}

Lithalsa is a frost-induced raised land form in permafrost areas with mineral-rich soils, where a perennial ice lens has developed within the soil. The term sometimes also refers to palsas and pingos.{{Cite book|last=Ballantyne|first=Colin K.|author-link=Colin Ballantyne|url=https://books.google.com/books?id=hl06DwAAQBAJ&q=lithalsa&pg=PA110|title=Periglacial Geomorphology|date=2018-01-16|publisher=John Wiley & Sons|isbn=978-1-4051-0006-9|pages=110|language=en}}