The continual occupancy of the area since 500 A.D. gives Hopi people the longest authenticated history of occupation of a single area by any Native American tribe in the United States. Yet most of the tutsqua has been expropriated. At 1.6 million acres, the modern Hopi Reservation is a mere 9% of the original tutsqua. People have used the Four Corners area for about 10 thousand years. Yet not much is known about the first 8 thousand years except that the people hunted locally available animals and gathered wild plants. Beginning in about 1 A.D. an identifiable culture developed over the next 700 years. The Hopi call these people Hisatsinom (People of Long Ago) although the public and archaeologists refer to them as Anasazi or San Juan Basketmakers. They occupied a vast territory stretching from the Grand Canyon to Toko'navi (Navajo Mountain), toward the Lukachukai Mountains near the New Mexico/Arizona border, and south to the Mogollon Rim.