M12 - High Fulgen
1 - Camp Moondown
2 - Glasspillar Caves
3 - Bolgan Master
4 - Primordia
5 - Whispering Caves
6 - Mercenaries camp
7 - Guard tower
8 - Ventrinio
The Siege of Moondown
In Camp Moondown M12(1) talk to captain Canwen, who will ask you for help in defending the camp.
Agree and then follow the woman and together defeat a squad of Tuatha.
When all enemies are dead, you'll get a task to find local healer. You'll find him in the cavern called Glasspillar Caves M12(2).
Map of Glasspillar Caves
1 - Master Bolgan
2 - Healer Colm
3 - Colm's bag
After defeating guards, talk to Calm. It turns out that he is wounded and needs Master Healing Potion.
You can give him your own elixir, prepare the cure on the nearby alchemic table or find healer's bag.
His backpack can be found in the chamber on the east. It is protected with a spell, but do not worry - you won't be hurt if you can't get rid of it. Colm can neutralize a curse.
When the man is healthy again, walk him to the exit from the cavern and return to Moondown Camp M12(2).
This time Canwen will ask you to look for blacksmith, who is missing in Whispering Caves M12(5).