Armed with gear more suited to a rock climber than a herpetologist, Geoff Sorrell (“Jungle Geoff” to his friends), canoes to work from his island base of Panama’s Institute for Tropical Ecology and Conservation. His main quarry isn’t slithering on the ground, it’s up above him. Geoff ascends 80 feet into the rainforest canopy in search of the Eyelash pit viper. Little is known about this mysterious snake due to its elevated habitat.