While heavy snowfalls are not unusual for January in Temirtau, Kazakhstan, residents were alarmed last week after snow fell white, but then was quickly coated by a black dust once on the ground, prompting environmental concerns.

Previously, local media reported that Temirtau had some of the highest pollution rates in the country.

In the video above, a children’s playground can be seen covered in dark gray-black snow as winds whip in the background. Credit: Instagram/irinabodagova via Storyful