The "Secret" Rock Waterslide of Algonquin’s East Side

If you’ve only ever visited Algonquin Park via the West Gate, you’re missing out on its wilder, more dramatic sibling. Tucked away on the East Side, accessible through the Sand Lake Gate, lies a hidden stretch of the Barron River that feels like a natural water park.

We aren't talking about man-made pools here—we’re talking about the stunning High Falls, where the river has smoothed out the earth to create a natural rock waterslide and deep, crystal-clear swimming pools perfect for jumping into on a hot summer afternoon.

Today, we’re skipping the visitor centers and heading straight for High Falls—home to the famous "secret" rock waterslide.

The Journey: Entering through Sand Lake Gate

To get here, you’ll leave the Highway 60 crowds behind and head toward Pembroke/Petawawa. You’ll drive down Barron Canyon Road, a winding gravel stretch that serves as the gateway to the park’s most stunning canyon and its best-kept swimming secret.

Pro Tip: Usually, you have to book your vehicle permit online up to 5 days in advance through the Ontario Parks website, specifically selecting the "Achray / Sand Lake Gate" entry point. However, if you are staying with us at Greystone on Golden Lake, you can cross that off your to-do list! We provide our guests with a complimentary park pass.

The Secret Shortcut: The "High Falls Cheater Trail

While there are several ways to reach the falls (including a long paddle or a 13km hike), those in the know use what the locals call the "Cheater Trail." This route is perfect for families or anyone who wants to maximize their time at the swimming pools.

How to get there:

1. Enter via Sand Lake Gate: After booking your entry in advance or picking up your pass from us at Greystone on Golden Lake, drive through the Sand Lake Gate and continue down Barron Canyon Road.

2. The Parking Lot: Keep an eye out for the specific parking area marked for the High Falls Cheater Trail (look for the "P" on the map located about 9km before you hit the main Achray Campground).

3. The Hike: From this parking lot, it’s a direct ~4km hike to High Falls.

   • Distance: ~8km round trip (saving you 5km compared to the traditional route!).

   • Difficulty: Moderate. It’s a well-marked path, but like any Algonquin trail, expect some roots and rocks along the way.

4. The Reward: As you approach the end of the yellow line on the map, the sound of the rushing water will guide you right to the top of the falls.

You’ve Arrived: Navigating the Falls

The Natural Rock Waterslide

As you reach the water's edge, you’ll see the famous rock chute. This is the smooth, angled section of granite where the river creates a natural slide into a pool below.

• The Hub: This is the main area for sliding and sunbathing on the flat rocks.

High Falls (The Big Drop)

To see the main High Falls, you need to head downstream.

• The Hike, Not the Flow: Do not try to follow the water’s edge or wade through the river to get here—the current is strong and the rocks are deceptively slick.

• The Path: Look for the rugged footpath that leads along the high bank. It’s a short, steep, and rocky hike, but it will take you safely to a spectacular lookout point where you can see the full force of the falls dropping into High Falls Lake.

  
  

The Natural Swimming Pools & Jumping Rocks

If you’re looking for a place to cool off without the intensity of the slide, head upstream (away from the falls) from the main slide area.

• Wading & Jumping: Here, the river widens into deeper, calmer basins. You’ll find the "natural pools" which are perfect for a relaxing soak.

• The Jumping Rocks: There are several spots here where the water is deep enough to jump from the ledges—but always, always depth-check the water yourself first to ensure no new logs or rocks have washed in!

What to Bring: High Falls Adventure

• Large towel: Great for drying off and acting as a "mobile" changing room.

• Packed lunch and plenty of water: There are no vendors inside the park.

• Mosquito spray or a bug jacket: These are absolute lifesavers, especially during a spring visit!

• Life jackets: These are essential, especially for the natural rock waterslide. The current at the bottom of the slide can be surprisingly strong and often pulls you down or away from the exit point before you can find your footing. A life jacket ensures you pop right back up to the surface so you can safely swim to the side.

• Sturdy footwear/hiking boots: For the 4km trek on the Cheater Trail.

• Water shoes with grip: Essential for navigating the slippery granite of the rock slide.

• Small first aid kit: Good for quick fixes on any minor scrapes from the rocks.

Ready to book your East Side escape? Check out our current availability at Greystone on Golden Lake and start planning your hike to the secret rock slide!