Sportsman Pass is required for entry. Annual pass is $30 and 3-day pass is $5.
In the generations of the trails of Camp Robinson, Merlin is probably second generation and is named after Basil's dog Merlin who ran many miles on the trails and collected countless turtles. This trail is tough singletrack and traces the side of the ridge line. There are few switchbacks, some rocks, roots, etc that make it a bit more challenging than other trails in the area.