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Idwal Buttress to Tower Rib

Snowdonia

Snowdonia National Park

Scramble up Idwal Buttress into Cwm Cnefion then up Tower Rib to the Glyderau plateau

Alpine Climbing Moderate

Distance
1.2 km
Ascent
559 m
Descent
46 m
Low Point
433 m
High Point
946 m
Gradient
34˚
Idwal Buttress to Tower Rib Map

Approach:

  • Start at Cwm Idwal visitor centre
  • Head SE out of the visitor centre and follow the path that crosses the outlet of Llyn Idwal
  • Follow path that runs parallel to the E edge of Llyn Idwal until you reach the buttress

Description

Description:

  • Scramble up the buttress starting where the quartz band meets the path
  • Once on top of buttress continue over a rightward rising rib until underneath a distinctive notch in the skyline
  • Continue up, cutting through a quartz band until you emerge in Cwm Cnefion
  • Head SE across the Cwm avoiding hidden drops and crossing a stream (good place to refill water bottles)
  • Move across the loose scree field in a S direction until Tower Rib comes into view (distinctive square shaped ridge in skyline)
  • Climb up the ridge until you reach the summit of the Glyderau plateau. Near the end to Yr Gribin ridge.

Descent:

  • Option 1: head W to summit of Glyder Fawr and follow path that heads down towards Llyn Y Cwn then head NE following a path that brings you down through Devils Kitchen into Cwm Idwal
  • From here follow path around Llyn Idwal back to visitor centre

  • Option 2: head N down Yr Gribin ridge
  • At base turn in a NW direction to rejoin path around Llyn Idwal and follow it back to the visitor centre.

I recommend carrying an OS map of the area (OL17 scale 1 :25000) I also recommend carrying '50 best scrambles in North Wales' by Garry Smith with in depth descriptions of mountaineering routes Ropes and climbing equipment can be carried but I have done both and it doesn't really make a difference to me.

Difficulty

Moderate

May involve slightly more complex glacier hikes, easy but possibly long rock ridges and steep snow up to 45 degrees. Equivalent to PD, PD+

Medium Exposure

2 out of 4

The route features some exposed and/or difficult to protect sections.

Remoteness

2 out of 4

Away from help but easily accessed.

Best time to visit

all year round

Equipment required

  • Quickdraws
  • Wires and Friends