A territorial claim for Antonio de Vaca Diez was carved into a tree during a later expedition by Edwin Heath.

Vaca Díez was an entrepreneur in the rubber industry who would later dominate the trade on the Orthon river.

Like other rubber barons, Antonio used the exploited local indigenous population as his workforce.

On February 1, 1897 The Orton Rubber Co. Ltd. was registered in London by Vaca Díez.

After the death of Antonio and Fitzcarrald in a river accident on the Urubamba in July 1897: rubber baron Nícolas Suárez absorbed the territory into his estate.