Miles City Boat Launch
Montana
Find: Montana moss agates, jasper (red/yellow/white), petrified wood
GPS: 46.41858, -105.86128
Nearest city: Billings, MT
Recommended Vehicle: Any vehicle to get to dock, AWD or high-clearance vehicle to get onto the shore itself.
Summary:
Montana moss agates are known for their translucency and their dark dendritic inclusions. The inclusions can come in a variety of colors and shapes based on oxidized minerals within the agate.
They are abundantly found in the plentiful gravels along the Yellowstone River. This boat launch and surrounding areas was a great spot to find them but there are truly an infinite amount of places to go within this area to find them.
You can get to this area with any vehicle, but I think you may struggle on the rocks in vehicles like sedans or FWD cars.