Is much shorter than the rest of the zone. Mabye only five minutes. I killed a few, and then fresh spawns come from the aged stonemite room. They didn't go to the spot of a bestirring stonemite killed first, they went to fill the spot closest to the stonemite room. I killed the aged stonemites in their room on the steps and got no aggro from these guys.
Located along the hallway before the Aged Stonemites. There are eight of these. They are non-aggro, but will assist aged stonemites if you pull past them.
Run by these and set up in the water, fully shrunk and fully submerged in order to fight the aged stonemites (784 hitters with AE rampage).