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Drone footage shows expanding Russian sinkhole

New footage captured by a drone shows a crater in Russia which has tripled in size within 10 months.

The sinkhole, measuring more than 120m in width, is thought to have been caused by flood erosion and the subsequent collapse of a former potash mine near Solikamsk.

The 76m-deep sinkhole has swallowed up to 20 holiday homes and others near the site are also at risk of collapsing.

The mine, owned by Uralkali, was closed in November 2014 when the crater first appeared.

In a statement, the company said: “Uralkali continues to implement the plan to address the consequences of the accident and mitigate the potential negative impact.

“The company is pumping out brine from the inflow area, proceeding with works to strengthen the cut-off walls between the Solikamsk-1 and Solikamsk-2 fields, and is tamping the water channels in the water-blocking layer.

“As of 24 August 2015, the sinkhole was measured 122m by 125m at the surface.”

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