[3] The road is located entirely in Orange County and is home to the Elk's Pen Trailhead in Harriman State Park.

In 1921, plans arose by the commission to construct the road, which was completed the same year and stretched along the borderline with the Harriman estate.

Major William A. Welch ordered 75 elk from Yellowstone National Park to be placed in a wired cage between Arden and Southfields in 1919.

Originally, people to cross the Erie Railroad tracks and the Ramapo River to continue along Arden Valley Road.

[7] In 1919, Major William A. Welch ordered 75 elk from Yellowstone National Park;[7] however, some had died en route.