<P> New Jersey is home to 72.2 miles (116.2 km) of the trail . The trail enters New Jersey from the south on a pedestrian walkway along the Interstate 80 bridge over the Delaware River, ascends from the Delaware Water Gap to the top of Kittatinny Mountain in Worthington State Forest, passes Sunfish Pond (right), continues north through the Delaware Water Gap National Recreation Area and Stokes State Forest and eventually reaches High Point State Park, the highest peak in New Jersey (a side trail is required to reach the actual peak). It then turns in a southeastern direction along the New York border for about 30 miles (48 km), passing over long sections of boardwalk bridges over marshy land, then entering Wawayanda State Park and then the Abram S. Hewitt State Forest just before entering New York near Greenwood Lake . In New Jersey the New York - New Jersey Trail Conference maintains and updates the Appalachian Trail . </P> <P> Black bear activity along the trail in New Jersey increased rapidly starting in 2001 . Hence, metal bear - proof trash boxes are in place at all New Jersey shelters . </P> <P> New York's 88.4 miles (142.3 km) of trail contain very little elevation change compared to other states . From south to north, the trail summits many small mountains under 1,400 feet (430 m) in elevation, its highest point in New York being Prospect Rock at 1,433 feet (437 m), and only 3,000 feet (910 m) from the border with New Jersey . The trail continues north, climbing near Fitzgerald Falls, passing through Sterling Forest, and then entering Harriman State Park and Bear Mountain State Park . The lowest point on the entire Appalachian Trail is in the Bear Mountain Zoo 124 feet (38 m). It crosses the Hudson River on the Bear Mountain Bridge . It then passes through Fahnestock State Park, and continues northeast and crosses the Metro - North Railroad's Harlem Line . This track crossing is the site of the only train station along the trail's length . It enters Connecticut via the Pawling Nature Reserve . The section of the trail that passes through Harriman and Bear Mountain State Parks is the oldest section of the trail, completed in 1923 . A portion of this section was paved by 700 volunteers with 800 granite - slab steps followed by over a mile of walkway supported by stone crib walls with boulders lining the path . The project took four years, cost roughly $1 million, and was officially opened in June 2010 . The project was done by the New York--New Jersey Trail Conference . The New York--New Jersey Trail Conference maintains and updates the Appalachian Trail in New York . </P> <P> Connecticut's 52 miles (84 km) of trail lie almost entirely along the ridges to the west above the Housatonic River valley . </P>

Where does the appalachian trail cross the hudson river