A TikTok user has shared a video of a strange ring of black smoke in the sky, with some people saying it looks like 'a portal to another dimension'.

A user called @finbilly08 posted the video yesterday on TikTok, where it's been viewed more than 600,000 times.

We see them standing outside and angling the camera up to the sky, pointing it to a large black ring that looks like it's made of smoke.