Hidden spot that runs a script, probably part of quest 600007, right side, lower level. The game files give no target map.
6 shortcuts to another spot in this map
Minimap from the game files. Positions are from the game files, not tested in Classic World. Portal kinds come from type names in the game files; kinds marked "not tested" have not been checked in Classic World. An unmarked portal has no portal graphic, so the way in may be a door drawn in the scenery.
You arrive on the right side, upper level, next to 1 here.
Grey numbers are portals on another map: each opens that map with the portal picked out. A coloured number followed by "here" is a portal on the map above. Positions are from the game files, not tested in Classic World.