You most likely got this message:
"GRAND OPENING OF BUSHTOWN: Come to the Unstuck me starting point, walk down, when going to the right side (to Nexus, horse stable, ext.) go right, when you see the tree immediately go up to see the opening! Staff Members will be opening it soon!"
That was from me.
JamesJaames and I decided to prank everyone in Graal City who was gullible enough to go to it. PLUS, James made a typo on the announcement so everyone went to the wrong place xD Anyway, it was fun pranking all of you