Cirque of the Unclimbables

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Cirque of the Unclimbables

Mountain

The Cirque of the Unclimbables is a cluster of dramatic granite peaks in the Ragged Range of Nahanni National Park Reserve in Canada's Northwest. Travellers come for world-class alpine rock climbing, remote wilderness scenery and long summer daylight.

Cirque of the Unclimbables YellowknifeInuvikHay River, Northwest TerritoriesCirque of the Unclimbables

Cirque of the Unclimbables essentials

Address: Ragged Range, Nahanni National Park Reserve, Northwest Territories, Canada

The Cirque of the Unclimbables sits in the Ragged Range, a subrange of the Mackenzie Mountains, and contains nearly two dozen named peaks, spires and towers carved by glaciation at the end of the last ice age. The compact walls, steep rims and free-standing towers give the area a Yosemite-like granite character that earned it the nickname “The Forgotten Yosemite.”

Climbing history dates to the early 1950s, with notable first ascents through the 1950s and 1960s and the Lotus Flower Tower becoming one of the region’s most famous routes after publication in climbing literature. Many classic and hard alpine routes were established later, and the cirque still draws experienced alpinists seeking long, committing climbs on cold, clean granite.

Visiting is an expedition-style experience: approach is typically by floatplane onto Glacier Lake or by multi-day river and creek travel into the cirque. Wildlife in summer includes woodland caribou, Dall’s sheep, mountain goats and bears, and the terrain combines exposed rock, alpine meadows and glacial cirques.

  • Lotus Flower Tower: A slender, photogenic granite tower famous for long, classic technical routes that feature in North American climbing history.
  • Bustle Tower: A solitary spire rising from the cirque that is a popular objective for technical climbers and a striking subject for photography.
  • The First, Second and Third Cirques: Walk or scramble to high viewpoints for sweeping views of concentric cirque walls, spires and the glacier-carved amphitheaters.
  • Glacier Lake approach: The floatplane landing spot that provides close-up views of the cirque rims and is the usual base for climbing parties.
  • Wildlife and alpine flora: Summer visits can include sightings of Dall’s sheep and alpine wildflowers on meadows below the cliffs.
Things to Do

Nearby Attractions to Cirque of the Unclimbables#

When to Go

Best Time to Visit Cirque of the Unclimbables#

Access and climbing are seasonally constrained by temperature and snow; most visits occur in the short northern summer when rock is most dry and daylight is long.

Summer (best)
June - August · -1°C - 14°C (30°F - 57°F)
Warmest period with the most stable access for floatplanes and river travel, and the main climbing season when routes are most likely to be free of snow.
Shoulder season (limited)
May - September · -6°C - 14°C (21°F - 57°F)
Early June and September can still offer climbable conditions but weather is more changeable and access may be less reliable; plan for shorter windows and potential snow on higher routes.
Winter (not recommended)
October - April · -28°C - -3°C (-18°F - 27°F)
Long, cold winter with heavy snow and extreme cold - access is extremely difficult and the area is unsuitable for typical alpine climbing during these months.

Weather & Climate near Cirque of the Unclimbables#

Climate

Cirque of the Unclimbables's climate is classified as Tundra - Tundra climate with cold summers (peaking in July) and freezing winters (coldest in January). Temperatures range from -28°C to 14°C. Moderate rainfall (639 mm/year).

Air Quality: AQI 19 Good
Best Time to Visit
JuneAugustJuly
Temperature & Rainfall
Temperature Range
21°
Warmest Month
-44°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Poor -28° - -18° -23° 36 mm partly cloudy 96% 1.3 m/s 0.0 low 5.8h
February Poor -25° - -13° -24° 30 mm partly cloudy 94% 1.6 m/s 0.0 low 8.5h
March Poor -23° - -11° -23° 36 mm partly cloudy 93% 2.4 m/s 0.3 low 11.6h
April Poor -14° - -3° -13° 40 mm partly cloudy 91% 2.8 m/s 0.7 moderate 14.6h
May Poor -6° - 4° -5° 45 mm overcast 87% 3.2 m/s 1.0 moderate 17.5h
June Acceptable -1° - 11° 3° 74 mm overcast 84% 3.3 m/s 1.2 high 19.3h
July Acceptable 2° - 14° 6° 95 mm overcast 84% 3.0 m/s 1.1 high 18.4h
August Acceptable 0° - 11° 3° 84 mm overcast 87% 2.9 m/s 0.8 moderate 15.7h
September Poor -5° - 4° -4° 64 mm overcast 90% 2.9 m/s 0.4 low 12.7h
October Poor -11° - -3° -12° 58 mm overcast 96% 2.5 m/s 0.1 low 9.7h
November Poor -23° - -13° -23° 45 mm overcast 96% 1.7 m/s 0.0 low 6.7h
December Poor -26° - -16° -21° 32 mm partly cloudy 96% 1.3 m/s 0.0 low 4.7h
Getting There & Around

How to Get to Cirque of the Unclimbables#

The usual staging point is Fort Simpson, the nearest service community; air access to the region is generally via Fort Simpson Airport. There is no rail access to the area - long-distance travel is by road to Fort Simpson followed by charter air or river arrangements.

The final approach is by charter floatplane to Glacier Lake or by river travel and small-boat/raft movement up Brintnell Creek and nearby waterways; both options require booking a charter or joining an outfitted expedition and expect multi-day river travel if not flown in.

Tips for Visiting Cirque of the Unclimbables#

  • This is remote backcountry - arrange a floatplane charter or a guided river approach and confirm logistics with Parks Canada or local outfitters.
  • The area lies within a national park reserve - check Parks Canada regulations and permit requirements before travel.
  • Routes are technical and committing - bring full alpine rock-climbing gear and only attempt routes within your ability or with an experienced guide.
  • Plan extra days for weather delays and carry bear safety equipment and knowledge; wildlife encounters are possible in summer.
  • Expect many mosquitoes near water in summer and pack appropriate insect protection.