The route went eastward through Harriman State Park, crossing Seven Lakes Drive before entering nearby Rockland County, New York.

When Route 210 was assigned in the 1930 New York State Route renumbering, it stretched from the New Jersey border in Greenwood Lake, over the current alignments of NY 17A, Orange CR 106 and Rockland CR 106, all the way to Stony Point.

CR 106 in Orange County was decommissioned on January 1, 2014, when maintenance of the road was transferred to the Palisades Interstate Park Commission.

The road is also very scenic, passing many hiking trails in Harriman State Park as well as several lakes.

After leaving the lake and mountain behind, Route 106 makes several drastic turns, one to the north and one to the south.

After another curve, this time to the east, Route 106 passes to the north of Tom Jones Mountain, the highest peak along the highway.

[4] Route 106 crosses Lake Kanawauke after leaving the shore of Little Long Pond.

Route 210 headed eastward, into Rockland County, ending in Stony Point.

On April 3, 2009, over one year since the closing of the highway, the Commission, Department of Highways (in conjunction with the New York State Department of Transportation) reported that the construction to fix the safety concerns near Little Long Pond would cost $300,000 (2009 USD).