Even what we call "indian mounds" in this part of the country are nothing more than native american trash piles. Not cerimonial or burial sites.
i realized you might consider them "trash piles"...my point is that most ppl start off looking for arrowheads and progress to graverobbing just to possess native american artifacts and that's a real problem out here.
thats why our tribe will not let anyone obtain a permit, lease or build until the land has a archaeological clearance.
i have experience living close to the land by hauling precious water and attending to livestock. and when i do go to one of the scared mountains to make my offering to mother earth, i leave my offerings on the ground or on a tree.
so u see some of these artifacts you and your buddies find are offering to mother earth, to bless the earth, the sky above and its creatures below...thats why its never used again.
your hertitage is really about who you are and knowing your grandfather's clan is a start for you to finding out who you are and where you came from.
peace be with you,
desbah