There are more than 560 federally recognized Native American tribes, residing on tribal land held in trust by the United States. The fee title to tribal land cannot be transferred without an Act of Congress and, with limited exceptions, grants of leases and permits are subject to federal oversight. Federal oversight on surface leasing of Indian lands is outlined in 25 C.F.R. Part 162.
Physicist Frank Oppenheimer, the brother of Manhattan Project director J. Robert Oppenheimer, didn't say exactly that when he founded the first-of-its-kind hands-on museum the Exploratorium in the late 1960s. But you know he wanted to.