The Western Shoshone's traditional lands stretch over two thirds of the state of Nevada. But since the late 1800s, the tribe has lost possession of millions of acres of that land to the government through the gradual encroachment of settlers. Two Shoshone sisters, Carrie and Mary Dann, have been fighting over ownership of their grazing land for decades, and for the sovereignty of the Western Shoshone people. Clay Scott reports from northern Nevada.