Climbs 23
Rocktype Limestone
Altitude 10m a.s.l
Faces N

Steep and sustained but well bolted. Colin Struthers on his own route. © rockcat

Crag features

Trench Wall is the long wall facing N across the A55 between Old Colwyn and Llandulas.
It lies below and roughly at right angles to the main crags at Penmaen Head. It is considerably taller than it appears from the road because of a shrub-filled trench that runs along the base of the crag. The rock is much better than it looks from the A55: most routes are good and there is enough worthwhile climbing to provide an enjoyable few visits for climbers operating in the 6a+ to 6c+ grade range.
All routes done so far lie in two adjacent sectors near the righthand side of the crag and are equipped with stainless steel bolts and double ring lower offs. The left hand sector, Greybeard's Wall, is the area of mainly grey rock that lies between 70 and 100 m L of the wire mesh and directly behind a small but prominent boulder in the grass field. The left hand part forms a broad convex pillar seamed with shallow grooves and has a prominent crack towards its R hand side. The right hand part is a concave wall with a wide brown streak near its top R hand corner.

The right hand sector, Sector Aretes, is separated from Greybeard's Wall, by some broken grassy grooves and corners. It is between 30 m and 70 m L of the wire mesh. It consists, unsurprisingly, of a series of aretes. Two are paticularly distinctive. The left hand of these starts about half way up the crag and has a slim borehole right up its nose (so to speak). The right hand one has a crack on either side. The crack on the left is prominent enough but the one on the right is probably the most striking feature on the entire crag. A blunt, slightly retiring buttress lies between the two aretes.

Approach notes

Park as for Pemmaen Head at the top of the headland on the old A55 just E of Old Colwyn. Descend past the Penmaen Head crags and continue down and R to a grassy area adjacent to the A55 from where the routes are easily viewed. Greybeard's Wall lies behind a small but prominent boulder in the grass and Sector Aretes is about 50 m to the right.

Some good climbs here, well bolted,cool moves and mostly solid Rock, well worth a visit. It is a bit dirty and dusty in places but just needs more traffic.
Daz8477 - 27/Jun/15
Very good little spot.Rock is very good quality,no loose holds and nice moves on the five routes we did
andybirtwistle - 08/Jul/14
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Climbs at this crag

Climb name Grade
  Greybeard's Wall
2 Set In Stone 6a+ 2
3 Spanish Plume 6a * 3
4 No Fool Like an Old Fool 6b 8
5 Grey Pride 6a+ * 14
6 White Magic 6c+ ** 14
7 Thin on Top 6a+ ** 37
8 Trench Warfare 6a+ 27
9 The Shield 6b * 32
10 Billy Liar 6a+ * 31
11 The Ambrosian Federation 6a+ * 22
12 Neither Mickling nor Muckling 6b+ ** 12
  Sector Aretes
14 Only a Girl 6b+ * 3
15 Ugly Duckling 6b+ * 1
16 Rebellion 6c *  
17 Insurrection 6c+ ** 4
18 Riot 6c+ ** 4
19 La Vista Al Mar 6b+ * 5
20 Trench Foot 6c **  
21 It ain't Over 6c ** 2
22 Mariana 6a+ * 12
23 Trencherman Groove 6b * 4
24 Breach the Trench 6c ** 5
25 Attila the Hen 6b * 18

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