Glacier
From Tardis Wiki, the free Doctor Who reference
A glacier was a large slow-moving mass of ice.
Varga is discovered in the glacier.
To stop an advancing glacier in 5000 AD, Brittanicus Base was established by Great Britain. While using an ioniser to melt the ice, they uncovered a troop of Ice Warrior which had been frozen for thousands of years when their spaceship had crashed in the area. (TV: The Ice Warriors)
The Northern Glacier on the Ood Sphere was were Ood Operations found the Ood Brain. (TV:Planet of the Ood)
A dangerous viral species was sealed in a glacier on Mars, probably by the Ice Warriors. It was accidentally freed by Bowie Base One in 2059. (TV: The Waters of Mars)
