Swiss cheese features

Pits in south polar ice cap, taken in consecutive southern hemisphere summers, the first of which was in 1999, the second in 2001. Mars Global Surveyor, NASA

Swiss cheese features (SCFs) are curious pits in the south polar ice cap of Mars (Mare Australe quadrangle) named from their similarity to the holes in Swiss cheese. They were first seen in 2000 using Mars Orbiter Camera imagery.[1]

  1. ^ Thomas, P. C.; et al. (2000). "North-south geological differences between the residual polar caps on Mars". Nature. 404 (6774): 161–4. Bibcode:2000Natur.404..161T. doi:10.1038/35004528. PMID 10724162. S2CID 4379259.