The indigenous inhabitants of the Cook Inlet Region are the Dena’ina. The Dena’ina are one of 11 Athabascan languages that are spoken throughout Alaska. It is believed that Athabascan-speaking Dena'ina arrived in the Southcentral Alaska sometime between 1,000 and 1,500 years ago. They are a matrilineal culture, tracing their ancestors through their mothers and grandmothers. The Dena’ina lived in nomadic bands, moving in seasonal subsistence rounds, and eventually developed permanent homes and communities. They were the only Northern Athabascan group to live on the coast and took advantage of the abundant plant and animal resources, developing a high degree of sophistication and complexity in their culture. When the Russians arrived in Southcentral Alaska in the late 1700s, it is believed that there were 3,000 to 5,000 Dena'ina living in the area. Today 1,500-2,000 people with Dena’ina ancestry live in Southcentral Alaska.