The Pierre Martin Speleology Group, founded in 1987, is one of the most active groups in prospecting, mapping and multidisciplinary work in Brazilian caves. It has a significant presence in the Intervales State Park, particularly in the caves that make up the Paiva System. Production: AG Imagem. Edition and cinematography: Adriano Augusto Gambarini. Narration: Ericson Cernawsky Igual. Support team: GPME.
Duration: 3:00. Portuguese.