Professor Aldo Rincón and his guide, Pedro Pablo Contreras

Professor Aldo Rincón and his guide, Pedro Pablo Contreras, conducting fieldwork in the Serranía del Perijá mountain range.

Professor Aldo Rincón and his guide, Pedro Pablo Contreras, conducting fieldwork in the Serranía del Perijá mountain range. © Marcos Guevara Credit: Marcos Guevara

Professor Aldo Rincón and his guide, Pedro Pablo Contreras, conducting fieldwork in the Serranía del Perijá mountain range.

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