They were in a large, poorly lit cavern that extended deep into the mountain.

There are also the working hours of many offices, which extend deep into the evening and sometimes all but require social drinking afterward.

The gap extended as far and deep as they could see.

A mile and a half from the spot where he had reached the ocean a flat spit of land extended deep into the water.

The roots may extend nearly one meter deep into the soil.

The swelling extends deep into the lining of the affected organ.

It was, he had learned, a living organism whose roots extended deep into the planet's surface.

By now, my summers extended deep into fall, and a few friends had become a community.

It is about 90 miles across at the widest point and extends deep into the earth.

The chief reason why they were visible was because they extended deep into the building block.