The accident occurred in the rural Chambero sector of Santa Barbara de Iscuande, a municipality in the department of Narino, which is surrounded by dense rainforest and accessible only by boat or small aircraft. Search and rescue operations have concluded, according to Narino Governor Luis Alfonso Escobar.
Jorge Tovar Castillo, a disaster response official in Narino, said that between 12 and 15 miners remain unaccounted for following the collapse. He noted that municipal authorities were handling the response but that communication had been difficult due to the remote location.
In a message on the social media platform X, Governor Escobar described the gold mine as an "informal" operation. Informal and unregulated mining is common in rural parts of Colombia, where operations often lack adequate safety infrastructure, leading to frequent fatal accidents.
"At this moment our priority is to save lives, accompany families and guarantee an opportune response to this painful tragedy," Escobar wrote.
The incident follows a similar mining accident in August in the municipality of Policarpa, also in Narino, which killed 13 people.