This shard is located close to Mammoth farm in northern Vulkwasten settlement. This is where you go to talk with Alphrost for quest “Something Rotten“. There is a Noglanor’s House at this location. Collectible is on the edge, overlooking the nearby shore and Jagged Grotto POI (epic enemy).
Northern central Malabal Tor, north of Vulkwasten Wayshrine, northern Vulkwasten.