Guild Wars 2

I don’t really know if this is a bug. But it definately is some weird stuff :-)

I was running around in straits of devastation.
Link to map screenshot for location here

I saw this small cave-like entrance and tried to get in, it worked. Screenshot here
I followed it (walls are randomly disappearing inside the little cave), how ever I end up at a door. Screenshot here

I tried everything to interact with it cause it looks like it was placed there for a reason.
Nothing worked.

To my surprise I could just run through it and ended up in another enclosed area behind the door. Screenshot here
Looks like it was put there but then forgotten or something.

So nothing major, but I was disappointed when reaching the end, there was nothing there :-)

Just discovered this area too. very odd.