Back in the age of the mysterious mound builders, perhaps.

"What if you turn up mound builders instead of Atlanteans?"

They were followed by people known as Mound Builders about 3,000 years ago.

It is considered to be the last word in the controversy over the Mound builders' identities.

They were one of several succeeding cultures often referred to as mound builders.

The first known inhabitants were the Mound builders.

"Mound builders" have more commonly been associated with the mounds in the Americas.

Next came another group of Indians known as Mound Builders.

Others recognize a setting among the mound builders as the book's original setting.

He backed three survey groups on Fennis, striving to place the mound builders there.

Before them, the Mound Builders had buried theirs within.

Little else is known about the Mound Builders.

The first known group was the Mound Builders.

Either assimilation or warfare led to the demise of the Mound Builders by the year 800.

These mound builders were advanced hunters and gatherers who built their villages on high ground near rivers.

The best known group is the Mound Builders of the Hopewell tradition.

"Did they know anything about the Mound Builders?

Remnants of the mound builders' work still existed, tucked away in far corners of the land.

They were mound builders, who created massive earthwork mounds as structures for political and religious purposes.

Ancient mounds were once made near the waterways, similar to that of the mound builders of the south.

Some believe this is another example that shows the artifacts were either a hoax or did not date back to the time of the mound builders.

"Mound builders of some kind," she said.

And some have begun to think that the earthwork is connected to mound builders who shaped the earth in Labrador 8,000 years ago.

In pre-Columbian times, this region was home of an ancient people known only as the Mound Builders.

By the time European settlers began arriving, the Mound Builders had vanished into history.