From the Bluewater Marsh dreamcatcher head west past the Aberdeen pig farm. You can cut through the wilderness straight there. The dreamcatcher is in the maple tree with no leaves on the right side of the road northwest of Lonnie's Shack.

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.