Demolished Cabin Magically Rebuilds When Kids Walk Through Doorway

I'm looking for the title of an old horror movie I saw about 20 years ago. It starts with a group of kids meeting up at a cabin out in the foothills.

When they arrive the cabin is in ruins, the only thing left standing is a corner and the doorway. When they walk through the door its as if the cabin was magically rebuilt. Strange things happen and they try to leave. Their vehicles won't start and they try to get out on foot but a mysterious fog won't let them leave, it just teleports them back to the cabin.

Can anybody remember this movie? Please help me!