[File:Estrela Março 2010-16b.jpg|thumb|right|240px|Cântaro Magro, Serra da Estrela, Portugal, formed as
nunatak during the
last ice age and now exposed]] A
nunatak (from
Inuit nunataq) is an exposed, often rocky element of a ridge, mountain, or peak not covered with ice or snow within (or at the edge of) an ice field or
glacier. They are also called
glacial islands.