At the end of July, a 200 meter deep sinkhole was discovered at the Candelaria copper and gold mine in northern Chile.
Initially, a diameter of 25 meters was measured, but new measurements show a diameter of 35.6 meters.
What has caused the sinkhole is still unclear, but suspicions are directed at the nearby mine owned by Swedish-Canadian Lundin Mining and a Japanese company.
Investigations are now to be carried out both inside the mine and outside to clarify the course of events.
See the protesters and the huge sinkhole in the clip above.