A mysterious UFO-shaped cloud appeared above mountains and baffled skiers who were stunned after seeing it in the sky.

The bizarre sight could be seen over the Duved ski resort in Sweden earlier this week and many stopped on the mountain to take photographs.

Nature photographer Sara Björkebaum spotted the cloud and uploaded a picture of it to her Instagram page, ‘bbaumish’. 

Ms Björkebaum, from Sweden, wrote: ‘Weird weather, cool clouds. I think I may jump on that spaceship.’  

Experts have said that it was a ‘lenticular cloud’, which typically form over mountain peaks.

They usually appear when the air rises near the mountains, and as it cools, it creates a cloud.