Located off Stanley Lash Lane in Morton, this trail offers hikers, who want a challenge, a good 2 to 3 hour hike. Rough terrain, steep hills, rocks to maneuver and a spectacular view is owned and operated by the Rideau Waterway Land Trust. At the parking lot visitors will see a map depicting the various trails offered and an “Honest John” donation box. The trail is a carry-in carry-out site and is suitable from sunrise to sunset. No fires are permitted.

Rock Dunder offers three different trail loops:

The Cabin Trail is an easy 1.3 km walk past a beaver pond, through mixed forest and a white pine plantation.

The Morton Bay Loop comprises two moderately steep sections to and from a small peninsular outlook over Morton Bay. The hike is 2km through mixed forest. Hiking boots recommended.

The Summit Loop is a 3.9km climb which runs alongside Dean's Island through a variety of forest, offering sneak peaks over rocky cliffs. The summit offers a panoramic view of the Rideau Waterway.  Hiking boots recommended