It was in 2005, 12 years after Escobar's death, that people in rural Antioquia, 200 miles north-west of Bogota, began phoning the Ministry of Environment to report sightings of a peculiar animal.
"They found a creature in a river that they had never seen before, with small ears and a really big mouth," recalls Carlos Valderrama, from the charity Webconserva.
He went to look, and found himself faced with the task of explaining to startled villagers that this was an animal from Africa. A hippopotamus.
"The fishermen, they were all saying, 'How come there's a hippo here?'" he recalls. "We started asking around and of course they were all coming from Hacienda Napoles. Everything happened because of the whim of a villain."