well giant spoiler I’m almost positive that’s a portal because there’s identical ones in two different places on the map so when you go through one it’ll take you to the other.
also I’ve never gotten past the door for reasons that I’ve already posted elsewhere but my info is taken straight from IGP’s vids and my own detective work from my game plays so far.
The chances are it isn't fully implemented yet. The roadmap for 0.1.2 suggests that it might not be 100% implemented until at least by that time, as it directly correlates with the topic
