To get here from the Heartlands North Citadel Rock dreamcatcher, head southwest down the slope and across the railroad tracks until you reach the trail. Head directly west past Valentine. You will take a right on a small trail. About 20 feet down the trail the dreamcatcher will be in a tree on the left with a stump in front of it.
Finding all 20 dreamcatchers will reveal the location of the Ancient Arrowhead treasure; A unique item that makes Arthur's stamina last twice as long when using the bow.
View the Dreamcatchers Guide to start collecting them in the optimal route.