This nerve-jangling footage shows the alarming moment a bear ominously circled a group of campers.

In the video, the bear slowly approaches from the woods and then walks precariously close to the campers' tents, pitched next to a lake.

As the curious bear inspects the tents, the campers use the growling sound of their motorbikes to try and scare the formidable beast away.

The nerve-racking footage shows a brown bear circling the campers' tents after approaching from the woods

The bear then stands on the edge of their camp and the group start their motorbikes to try and scare it off

The bear runs off, but then approaches the camp again in the nerve-jangling footage

As the group sound their motorbikes together, the bear finally returns to the woods after a frightening minute

As they rev their bikes, the bear scuttles away from their camp.

However, it then stands its ground, bears its teeth and marches back towards the camp.