HI-09 Door Checking | An update...?

Bit of a longer one! The video that I "found" was old. However I completely didn't even know there was a door where you spawn in at. Did minor exploration there, but found really nothing. Guess this is turned from a "checking this wacky door" to "exploration, day __" guess that's what I'm doing now, still keeping the door as the thumbnail :p. Thank you to the person who told me about the steps though, now I gotta check out more tmmr. -- ArrowOrion, an explorer now?