I was exploring the Crystal Overlook, a remote area north-west of the map, and I saw a forgotten near a teleporter (you know the good old teleporters of the crystal desert). There was no stone around to activate it, but talking to the forgotten I got this:
Teah he can teleports you to the Crystal Desert. I haven't tried as I was exploring (and didn't come back when I was done - blame the Mad King for that) but if you're looking for him, he's in the upper left corner of the map.
Apparently he teleports you to the Salt Flats (that what says the next screen).
Going to Tyria from the elonian desert
Sir Mad
Savio
It's already discussed here and here. Closed.