Noun
nunatak (plural nunataks or nunataker)
A mountain top or rocky element of a ridge that is surrounded by glacial ice but is not covered by ice; a peak protruding from the surface ice sheet. [from 1870s]
A sort of fish-shaped feature, with a gaping mouth, called Carapace Nunatak had been the site of an ancient lake. Source: Internet
The “other stuff” includes small chunks from Earth’s moon or Mars, or the oddball space rocks like the ones from Graves Nunatak. Source: Internet
Nunatak mountains on Greenland's east coast. Source: Internet