Cape Horn is located on the Columbia River in Washington, near the town of Washougal. The full loop hike is open from July 16 to January 31 each year. The upper section is open all year, but the lower section is closed from February to July 15 for peregrine falcon habitat.
For this loop hike, I was hoping to find an alternate route to Silver Star that was less steep and rocky than the Grouse Vista trail. I found out that the Tarbell trail is not less steep or rocky, but it was interesting.