When had humans reached Tierra del Fuego according to archaeological accounts?

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distribution of aboriginal South American and circum-Caribbean cultural groups — South American nomad Distribution of aboriginal South American and circum-Caribbean cultural groups.

According to archaeological accounts, Paleo-Indians reached Tierra del Fuego by at least 12,500 years ago. Other records suggest that nomadic hunter-gatherer groups reached the region approximately 6000 BCE after migrating through the continent.12

These early inhabitants organized themselves into small, kin-based groups to facilitate movement across the landscape in search of game and favorable climatic conditions. Over time, these populations adapted to the harsh environment of the extreme south by hunting wild animals, such as the guanaco, fishing, and gathering shellfish and edible plants.13