The first major archeological survey of sites along the trail has recently started.

A preliminary archeological survey of the area was conducted in 1986.

The site was not rediscovered until an archeological survey in 1998.

Archeological surveys point towards the development of culture and art forms in this period.

In 1976 the Foundation conducted an archeological survey of the grounds.

During this restoration, in 1955-1962, an archeological survey was conducted.

During an archeological survey in 1962-1963, marks were found from posts for an older building on the same location.

Archeological surveys and investigations were conducted on the island starting in the late 1970s.

Federal and tribal laws require archeological surveys before major construction projects.

An archeological survey of the park revealed a late paleo-Indian camp.