Climbs 22
Rocktype Conglomerate
Altitude 434m a.s.l
Faces S

Coum Mahon Overview © Sean Martin

Crag features

Coum Mahon/Mahon Valley is a mountain crag located in the Comeragh Mountains in the South East of Ireland in County Waterford.

This is a large valley offering Summer trad, scrambling, mixed climbing and rarely ice climbing when the falls freeze over.

There are a number of climbing areas within the valley, ranging from 250m to 1.5km from the main car park.

The climbing on offer is on conglomerate and the usual caveats apply when climbing on this unpredictable rock. There are sections of sandstone and these can be loose. The climbs here are rarely repeated and are often vegetated. Dampness can be an issue and depending on the aspect and amount of vegetation one to three days should be allowed for drying after heavy rain.

Approach notes

The large car park at GR314080 provides ample parking, easily holding 60 cars. There are also two smaller car parks, one above and one below the main one. However caution should be exercised as there have been a number of break ins here in the past ten years, so follow the usual rules when leaving your car for long periods.

The valley contains Mahon Falls, one of the more popular tourist destinations in the region and the car parks can fill up on good weather days during the holidays. That said

For other peaks and crags in the local area refer to the OSi Discovery Series map no. 75.

All climbs are within a 45 minute walk of the car park.

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Climbs at this crag

Climb name Grade
 Little Buttress 
2CallunaHS 4b  
3An Giorra MaolVS 4c  
 East Facing Buttress 
5Left Hand CrackHVS 5a  
6Centre CrackHVS 5a  
7Right Hand CrackHVS 5a  
 Mahon Beag 
9Ancient RainE2 5c  
10Mahon ChimneyHVS 5a  
11Happy CrackE4 6a  
12Hissing SidE1 5b  
13SalamanderHVS 5a  
14Deranged CousinsVS 5a  
15The Listing AtticVS 4c  
16Iomaire Na CaorthanHS 4b  
 Falls Gully 
18Inarticulate DreamsVS 4c  
19The DreamingHVS 5a  
20Political WorldS 4a  
 Stack's Cliff 
22The Big Bang TheoryHS 4b *1
23Jacobs LadderHVS 5a *4
24RavingHS 4b 2
25ToadpipeVD 4a 2

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