It has 3 levels, each being the size of a football field.

It was about half the size of a football field.

It is a wide open area about the size of a football field.

This is more or less the size and shape of a football field.

In Houston he said there is one the size of a football field.

The space was vast, the size of a football field.

The waves break in an area less than the size of a football field.

The group dug out an area the size of a football field and 45 feet deep.

The average field size is only 0.35 ha, ranging from 600 to 6000 m2.

One pod could cover an area the size of a football field.