[Rb ver. 2.0]

"Archeologists have known since 1985 that the area contained indigenous artifacts. But their extent and significance only became clear this month when the U.S. Army Corps of Engineers began work on removing them so the land could be used for a dam project.

Experts called for a halt to the excavation, saying the use of heavy machinery exposed the stones to the elements and may have destroyed important artifacts. The Corps of Engineers has said the site will be preserved. "

~Preserved under the Dam or the lake?~

[ReignOfError]

Construction goes on above, below and beside the dam, as well as upstream (i.e. under the lake).