Complex sentence: Humans inhabited Tierra del Fuego as far back as 10,000 years ago, home to the ethnic Yámana tribal community, who, living in harsh environment of the present day national park area, survived on the natural resources of the sea.
Split into simpler sentences: Humans inhabited Tierra del Fuego as far back as 10,000 years ago. The Yámana people, living in the harsh environment, survived on the natural resources of the sea.