Category:Patterned grounds
Wikimedia Commons has media related to
Patterned ground
.
The main article for this
category
is
Patterned ground
.
Patterned grounds may have different origins, amongst others:
Cryoturbation (
ice wedges
,
palsa
and
pingo
);
Desiccation
;
Water expulsion by squeezing;
Lava recrystallisation.