Some public land in that area, though the largest concentration of public land with good turkeys in NE is the NW panhandle of the state. The Chadron/Crawford area has an abundance of national forest land, and it’s more like a Black Hills Hunt to be honest with you, similar terrain. Lots of birds, but becoming more and more popular every year as NE is an OTC license state.
Valentine has more birds, but you’ll be knocking on doors more than likely. Have hunted both, and preferred Chadron for a shorter trip, Valentine for a longer one where you can scout and ask permission for 1/2 day or so.
Go the bow season if you have the option. You’ll get a crack at them before anyone else, and esp. on private land in the Valentine area, your odds are decent with a bow in-hand.
Joel