Nearly 100 underground tunnels, running a combined length of more than 84 kilometers, or 52 miles, crisscross and plunge into the depths of the mountain that hosts the Zijin gold mine in Buriticá, northeastern Colombia. Since 2021, those tunnels have been invaded by informal miners associated with Colombia’s largest criminal armed group, the Gaitanista Army of Colombia (EGC), called the “Gulf Clan” by the government, who are digging their own honeycomb of tunnels into the same massive gold deposits. Confrontations between the informal miners Zijin security personnel have at times escalated into underground gun battles. And as the mine acts as a magnet for increasing criminality, both social and environmental destruction have followed. Residents describe the situation as “a ticking ecological time bomb.” Some say they worry that the thousands of poorly constructed tunnels built by the informal miners are in danger of collapsing the mountain entirely — a fear also expressed after investigations by the Mining, Environmental and Agrarian Office of Colombia’s Attorney General’s Office. Concerns over contamination In a public statement from July, the AGO warned that illegal mining is creating “grave environmental consequences” that include “structural geological risk to the base” of the mountain where the Zijin mine is located. “All mining, legal or illegal, contributes to ecological damage, and potentially threatens water tables via underground aquifers, causes deforestation and in turn these phenomena threaten biodiversity,” Oscar Alejandro Pérez-Escobar, a Colombian researcher at the Royal Botanic Gardens, Kew, in the U.K., told Mongabay. “The region where Buriticá…This article was originally published on Mongabay
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