From the binding stone in ardee face NW and go up the hill. You will see some large stone obelisks standing along the ridge, follow them until you see a stone hut. That is the entrance. The dungeon is well done, small and a lot of fun. Most of the mobs will agro other mobs of their same type, so a little discipline is necessary. Levelled fast from 11 to 14 here, though my first trip there was tough. Drops include some class specific staves, caster armor, leather armor, reinforced armor, and scale armor. We also got some decent weapons (yellow to level 16).
This dungeon really only supports about 20 adventurers comfortably. More than that and people start stepping on each other's camps.
One of the best things Mythic has done is the anti-train code. If someone trains a bunch of mobs to the entrance right through your group, the mobs will return to their spawn points without molesting anyone as long as you do not attack them.
Banal of Wyrd, Bedevere
http://pub83.ezboard.com/bwyrdofhibernia