Map of Falkner, 1772 (detail). Mouth of the Black River.
The chechehet (perhaps means people of tuco-tuco), were one of the three main part of the het or ancient pampas according to the classification that the English Jesuit Thomas Falkner made in 1774. Between the XV and XVIII centuries lived the regions of El Ajó, El Tuyú (Guaraní word meaning barreal, south of Samborombón bay), Mullún (Araucanian name of the Buenosairean coast) and the mountain ranges of Tandilia and Ventania (also known as serranos), until the mouth of the Colorado River and Negro River. Which means that they were in the southern half of the current Argentine province of Buenos Aires, limiting by the North with the Querandis. In the South the denomination In the map of Falkner they appear like partiality of the Puelche, reason why probably it is another denomination of the gennakenk (or northern tehuelches in the classification proposed by Casamiquela).
Juan de Garay in his expedition of 1592, found them near the current Mar del Plata. In 1746 the Jesuit mission of Our Lady of Pilar de los Puelches, near the Laguna de los Padres, was established in their lands.
As a hunting weapon they used boleadoras. Sources and
Aborigines of Argentina
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