<Tr> <Th_colspan="2"> Related ethnic groups </Th> </Tr> <Tr> <Td_colspan="2"> Yavapai, Hualapai </Td> </Tr> <P> The Havasupai people (Havasupai: Havsuw' Baaja) are an American Indian tribe who have lived in the Grand Canyon for at least the past 800 years . Havasu means "blue - green water" and pai "people". </P> <P> Located primarily in an area known as Havasu Canyon, this Yuman - speaking population once laid claim to an area the size of Delaware (1.6 million acres (650,000 ha)). In 1882, however, the tribe was forced by the federal government to abandon all but 518 acres (210 ha) of its land . A silver rush and the Santa Fe Railroad in effect destroyed the fertile land . Furthermore, the inception of the Grand Canyon as a national park in 1919 pushed the Havasupai to the brink, as their land was consistently being used by the National Park Service . Throughout the 20th century, the tribe used the US judicial system to fight for the restoration of the land . In 1975, the tribe succeeded in regaining approximately 185,000 acres (75,000 ha) of their ancestral land with the passage of the Grand Canyon National Park Enlargement Act . </P>

Indian tribe at the bottom of the grand canyon