Serpent Seeker Charm ArtifactsFollow

So I read about the great charm available with TSS,and talked a guildy into taking me around for non-drop artifacts. I have all of them from CR, Blightfire, and Goruku, that are ground or chest spawns.

My question is this: is there 1 more ground/chest spawn that's fairly easy to get to? I'm pretty sure Im 1 turn-in away from +1 regen/+1 mana regen, and I'd really love to be able to get it soon. I tried the one in Icefall, but some named spotted me from half the map away, and turned me into a stain...

You also havent mentioned Sunderrock, depending on your level most of these should be groupable.