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On Sunday, an enormous pile of excavated soil and other construction waste crashed down on an industrial park in Shenzhen, China, in a landslide burying dozens of buildings, and leaving more than 90 people listed as missing.

Hundreds of rescue workers arrived to search for survivors, reportedly finding at least seven so far.

Local media reported that the massive pile of construction debris had been closed earlier this year, but that illegal dumping continued for many months.

Firefighters search for survivors at the site of a landslide that hit an industrial park in Shenzhen, Guangzhou, China, December 20, 2015.

An aerial photograph of the site of the landslide in Shenzhen, China.

Rescuers look for survivors in an industrial park in Shenzhen.

Rescuers work at the site of a landslide in Shenzhen.

Rescuers use machinery to search for potential survivors near the buildings buried under a sea of red mud in Shenzhen.

Rescuers search for potential survivors near collapsed buildings.

A damaged building in the debris of a landslide that hit an industrial park in Shenzhen on December 20, 2015.

Chinese rescue personnel walk past damaged buildings and vehicles at the site of a landslide in Shenzhen.

Rescuers use machinery to search for potential survivors.

Rescuers search for survivors in the rubble of collapsed buildings.

An aerial view shows rescuers looking for survivors at a damaged building.

Rescue workers continue looking for survivors after sunset.

Rescue workers on site in Shenzhen, Guangdong Province, on December 21.

Rescue workers look for survivors on December 21, 2015.

Emergency services search for survivors at an industrial park.

Firefighters stand next to collapsed buildings in Shenzhen.

Firefighters use flashlights to search for survivors among collapsed buildings.

Evacuees rest in a shelter set up at a gymnasium near the industrial park.

Broken houses in the landslide in Shenzhen on December 21, 2015.

People watch rescuers using machinery to search for survivors.

Men in business suits stand on a pile of mud, after the landslide in Shenzhen.

Dogs left stranded at a collapsed building on December 21, 2015.

Damaged vehicles at the site in Shenzhen on December 21, 2015.

Firefighters search for survivors after buildings collapsed in Shenzhen.

Rescue workers work in Shenzhen on December 21, 2015.

A pair of shoes and other belongings sit near a damaged building, as rescuers search for survivors at the site of a landslide.