Antarctic Images by Anthony Powell Antarctica photos videos and timelapse : Photo Keywords : ridges  : Pressure Ridges in front of Scott Base. These form as the sea ice in front of Scott Base is crushed by the advancing Ross Ice Shelf behind it.

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Pressure Ridges in front of Scott Base. These form as the sea ice in front of Scott Base is crushed by the advancing Ross Ice Shelf behind it.
See photo in original gallery.