 One source states that the last fluent native speakers died in the 1980s, A Radboud University linguist worked with speaker Herminia Vera-Ona who passed in 2014 to write a reference grammar of the language.The Selk'nam people, also known as the "'Ona", were an indigenous people who inhabited the northeastern part of the archipelago of Tierra del Fuego for thousands of years before Europeans arrived.They were nomads known as "foot-people," as they did their hunting on land, rather than being seafarers.