Huh ? Areaportals are mostly for doors.
SoulRebel:
Assuming your picture is from the side, your problem is probably that q3map gives vertical splits priority over horizontal (blocks have heighest priority, then hints, then other brushwork). What you want is something like this
|ssssssssssssssssssssssssssssssssssss|
| |
| |
|----------------C-------------------|
| C other |
| P C sector |
--------------------------------------
the — are a split, which you probably need to use a hint to create. The C is a wall of structural caulk embedded in your mountain. Use the portal viewer to make sure you acutally have a volume on each side of the caulk, and that they are completly hidden from each other by it. If you have that, and the other side is still being drawn, you may have another problem…
Use control D to hide details when you are making sure your caulk wall actually hides stuff.
