how can i access Mystery Desert 1 (MD1) ?

[swingegg 0]

im in battle town. npc mystery portal? but i cant teleport there. im 95+

[arthur~ 7]

that's not done yet (i think) 

[Mercury 0]

You can't go there yet. We will announce when it's opened.

[zenet0 0]

As i know its open, but no idea whats the lvl requeriment. Oh and the map is empty, no mobs there. Well at least it was open when i went to check 1 week ago.