Howling Stones Basement - Easy to get to - Zone in, face northeast and jump off. You will end up on the side opposite the location of the named/PH for a medallion. There are a couple of mobs at the bottom that you can single, just don't aggro the medallion named if he is up. Facing the center and going to your left you only have to split the first 2 mobs in the hallway. After that following the hall around to your left is all single pulls to the end. There are 2 named that can pop in that hall if you need RoS T2 gear. You will want a group for these, but the rest of the trash are molo-able.
By the time you clear that side it will be time for repops.
-Z-