Then they came out into a natural bowl walled by sheer cliffs.

There was a natural bowl where the outdoor theater would be located along 45th Street.

Cajun Field's surface is set two feet below sea level in a natural bowl.

They had emerged from a gap in a low bluff and were at the edge of a natural bowl several hundred yards across.

She was looking down raptly into a broad, natural bowl.

Yes, it is a small depression, a sort of natural bowl.

He swung out to sea for a distance, then returned by another route, and finally dropped down to a landing inside the great natural bowl.

Eight yards beyond, the ravine ended in a natural bowl or depression.

Because the garden lay in a natural bowl, drainage was adequate.

Smog became a regular occurrence especially in the city centre that was at the bottom of a natural bowl.