Hundreds of acres in Michigan are covered in parallel rows of earth that are the remains of an ancient Native American agricultural system. The surprise find has archaeologists amazed.

Hundreds of acres in Michigan are covered in parallel rows of earth that are the remains of an ancient Native American agricultural system. ... This allowed the drone to precisely map subtle features ...

Hundreds of acres in Michigan are covered in parallel rows of earth that are the remains of an ancient Native American agricultural system. The surprise find has archaeologists amazed.

Hundreds of acres in Michigan are covered in parallel rows of earth that are the remains of an ancient Native American agricultural system. The surprise find has archaeologists amazed.

Hundreds of acres in Michigan are covered in parallel rows of earth that are the remains of an ancient Native American agricultural system. The surprise find has archaeologists amazed.

Hundreds of acres in Michigan are covered in parallel rows of earth that are the remains of an ancient Native American agricultural system. The surprise find has archaeologists amazed.

Hundreds of acres in Michigan are covered in parallel rows of earth that are the remains of an ancient Native American agricultural system. The surprise find has archaeologists amazed.

Hundreds of acres in Michigan are covered in parallel rows of earth that are the remains of an ancient Native American agricultural system. The surprise find has archaeologists amazed.