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.
There, take portal1↙Left side · lower level(you arrive on the left side, lower level, next to 2 here)or2↗Right side · upper level(you arrive on the left side, middle level, next to 3 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.
In The Hill East of Henesys, take2↘Right side · lower level
There, take portal1↖Left side · upper level(you arrive on the left side, upper level, next to 4 here)or2↘Right side · lower level(you arrive on the left side, middle level, next to 5 here)
There, take portal1↖Left side · upper level(you arrive on the right side, upper level, next to 7 here)or2↘Right side · lower level(you arrive on the right side, middle level, next to 8 here)
