Is there any folklore or mythology out there a…

Is there any folklore or mythology out there about trees being used as portals in order to reach another land/alternative universe?

I’m going to have to look into it!!! I always thought that they were as a child. In my backyard I had these two massive pine trees that were planted next to eachother, and there was an incline between the two trees. I used to pretend it was a portal to another realm, or the entrance to a home :’). I’ll follow this post up with another once I do some digging.