It is a sub-oval, flat-topped mound, situated at the foot of a small valley.

Presently the group parted to form a circle about what appeared to be a small, flat-topped mound of earth in the center of the clearing.

The remains of the pond are still visible, in the north-west corner the fort rose in a small flat-topped mound about thirty feet high.

Caldwell and Miller agree with earlier descriptions that the large mound was a circular, flat-topped mound.

It was a quite substantial flat-topped mound, every inch of it clad in mosses that matched whatever one might be seeing from any conceivable angle.

Out on the horizon stood a black massive bulk, the flat-topped mound of an immense volcano.

In the center of this natural amphitheater, was a little flat-topped mound of hard earth.

It consists of four rectangular patios linked by platforms and flat-topped mounds.

At Mound Bottom, the principal large flat-topped mound and at least 13 additional smaller mounds were scattered about a central plaza.

With the earth they removed from these canyons, they built great flat-topped mounds that dot the horizon like the desert mesas of the Southwest.