Glacier
A glacier was a geographical feature, a huge formation of ice common to the Arctic Circle on Earth.

In 2153, a glacier was melting and debris from a crashed alien ship was set free including two Borg drones. The A-6 excavation team built a base camp at this place for further research. ()

Faced with crash landing the  on a planet in 3189, Lieutenant Keyla Detmer sought a glacier with the highest thickness and density levels. Discovery survived the landing, and found the glacier was composed of parasitic ice. ()

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de:Gletscher
Landforms