Hundreds of sheep have been walking in a circle for 12 days straight in China

Hundreds of sheep have been eerily walking around in a circle for 12 days straight in northern China’s Inner Mongolia region.

The bizarre behavior, captured on surveillance video, shows the large flock continuously marching clockwise in a near perfect circle on a farm.

Some other sheep can be seen spectating from the outside the rotation while others at times stand motionless in the center.

Video of the strange scene was tweeted Wednesday by Chinese state-run outlet People’s Daily, which reported the sheep are perfectly healthy and the cause of the behavior remains a mystery.

The sheep owner, identified as Ms. Miao, claimed the spectacle began with a few sheep before the whole flock joined, Metro reported. Although there are 34 sheep pens at the farm, only the sheep in one of the pens — number 13 — have been acting this way. They’ve been on the move since November 4th.