Rock Dunder Nature Reserve


Rock Dunder is open for the season, starting May 15, 2021.

At Rock Dunder, all of our previously implemented COVID protocols are still in place:

  1. Drivers/hikers are asked to wear masks when purchasing passes at the trailhead.
  2. Please use contactless forms of payment – credit, debit, or purchasing your pass in advance.
  3. All trails are one way to facilitate social distancing. Please follow the posted signage.
  4. Washrooms are closed for the 2021 season. Used toilet paper and other trash must be bagged and taken offsite by the hiker
For those who live outside the region, we ask that you follow provincial Covid-19 regulations and plan your trip to Rock Dunder once lockdown restrictions are lifted.


Day Passes *New 2021 prices*: Purchase online here

Passes will also be sold at the Rock Dunder trailhead. 

  • Children under 6 years of age accompanied by an adult: no pass required

  • Day Pass per hiker: $5.00 

  • Group Day Pass for 3-6 hikers: $15.00

  • Groups of more than 6 hikers: contact us

About Rock Dunder: 

  • Rock Dunder is a treasure that lies within the UNESCO Thousand Islands Frontenac Arch Biosphere Reserve. Rising 275 feet above Morton Bay, Rock Dunder provides breathtaking views of the surrounding lakes and woodlands. Trails lead to one of the highest points of land in the area, and offer stunning vistas that are enjoyed seasonally by  local residents and visitors to the area. For many, childhood memories of hiking trips to Rock Dunder remain fresh in their minds.
  • Rideau Waterway Land Trust members and supporters raised funds to purchase Rock Dunder in 2006. Scouts Canada decided to sell Rock Dunder, after using the site wilderness camp for almost 40 years, and to use the funds used to upgrade other camps  better suited to younger campers.
  • RWLT’s acquisition of Rock Dunder ensures this significant property remains undeveloped.
  • Open for hiking from sunrise to sunset, May 15 - Nov 15
  • Purchase your pass ahead of time online or at the gate when you arrive. 


  • The 2 trails include the Morton Bay Loop and the Summit Loop (the Cabin Trail is currently closed).
  • 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.
  • 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.

Rock Dunder Location:

  • 72 Stanley Lash Ln, Morton ON
  • Located at the portage leading to the Gananoque River system and down through the heart of the UN Biosphere, Rock Dunder provides a natural rest for canoeists traveling the Rideau Waterway.
  • Rock Dunder is located just south of Morton.  Take Stanley Lash Lane west of Highway 15, and go 1200 metres to the parking lot and trail head.
  • Visitors need to be mindful of traffic when walking along the highway shoulder towards the Rock Dunder entrance off Stanley Lash Lane.
  • Rideau Waterway Land Trust staff and volunteers have been making improvements to the trails at Rock Dunder. The two log cabins are off limits to hikers.


  • RWLT does not control arrival and departure times of visitors. A supporter pass does not guarantee a parking place. When on-site parking at Rock Dunder is full, visitors should use off-site parking to the north. There are No Parking areas signed on the shoulder of Highway 15 near Stanley Lash Lane. Cars parked illegally may ticketed or towed: the OPP enforces the No Parking areas.

      Rideau Waterway Land Trust, P.O. Box 91, Seeley's Bay, Ontario, K0H 2N0 Canada. Phone: +1 (613) 305-3507

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