The Deamhan Creig for the Ardee ~L20 quest series can be found in a group at 47800, 55700. If you get caught approaching from the hilltop near them, you will run right into a bunch of purple con Deamhan Aiers. You probably won't survive the encounter.
Safely approach from the Sheevra slave camp at 49800, 50500 then head to the proper coordinates.
Edited, Dec 6th 2009 4:05pm by mardaz