The Indian mounds on the LSU campus are believed to be over 6,000 years old.
Ironically, a commenter who called himself "Johnny White Dude" was just telling us how Americans generally respect Indians. I guess you're totally ignorant about stories like this...eh, Johnny?
Children are using the "Please do not slide on the mounds" signs to slide on the mounds--presumably with their parents' approval. That's about how much most Americans respect Indians. Duh.
For more on the subject, see White Christians Say What's Sacred and Oxford Mound Is Gone?