ice cap , also: icecap
ice sheet

People who always lived near the poles on the ice cap.

It is also sometimes referred to as an ice cap.

The other, this ice cap, is two miles high and solid.

There's supposed to be water under the surface of the ice cap, but they haven't been able to get to it.

Sites are found close to the ice caps of the time.

It was covered by an ice cap for thousands of years.

You thought that a seal had come to rest on an ice cap!

I'm going to go in fast over the ice cap, try to stay low and approach near sea level.

"No more than a lost city under the ice cap."

Then again, scientists have just discovered how little they know about the ice caps to begin with.