256
Kirsla, south-east exit
Bottom floor, north-east corner
Exit is found in north-east; look for discreet ruins near an oasis cut by stones, near a rock "wall".
Found in Mountains of Barr, north-west part of the same region you enter the copper mine.
These require dragon windpipe flute, obtained from much farther into the mountains from a graveyard. You can play about four tunes with the flute depending on the length of time the key is pressed (and supposedly hardness), match the tune with the description of the relief. The other tunes are needed later
Happy / yellow - short, chipper tune; short, light tap
Playful / green - mellow/sad tune; long, light tap
Sad / blue - mellow tune; short, hard tap
Angry / red - long-ish, fast paced tune; long, hard tap
You can practice the presses away from the reliefs to avoid the spawning of the dragons when you get the tune wrong. IMO the playful and sad tunes are the wrong way around.
Doors with changing relief needs all tunes played on matching emotion relief. They need to be played in order starting from the one after blank. Failure seems to reset the sequence.
Happy / yellow - short, chipper tune; short, light tap
Playful / green - mellow/sad tune; long, light tap
Sad / blue - mellow tune; short, hard tap
Angry / red - long-ish, fast paced tune; long, hard tap
You can practice the presses away from the reliefs to avoid the spawning of the dragons when you get the tune wrong. IMO the playful and sad tunes are the wrong way around.
Doors with changing relief needs all tunes played on matching emotion relief. They need to be played in order starting from the one after blank. Failure seems to reset the sequence.
Aqueduct entrance is at the south-west corner of Airyglyph. In case you've forgotten.