Rock Climbing
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Alejandro Baeza, OGG's Membership Secretary, has been climbing since 1997, starting at the tender age of 17. Since then, with all but a few some gaps during his 20s, he's been a keen climber.  

We asked Alejandro:


What is your greatest climbing achievement todate?

Frendo Spur in Aguille du Midi, in the Mont Blanc Massif of the French Alps.


Where do you most like to climb?

I think the Alps are the place I liked the most although every place has its own charm.


What's your next big challenge?

Mont Blanc - Three Mounts Traverse, although it only has 100 or so metres of technical ice climbing. The rest is a mountaineering route.


Which Climbers do you most admire?

I admire Ueli Steck as an Alpinist, from Switzerland (RIP) and Adam Ondra as a rock climber, from Czechia.


But my heroes are my climbing partners: Ramiro Villanueva from Rosario, Argentina and Gordon Lamb from Yorkshire.

with Alejandro

JULY 2021


OGG's Membership Secretary is a keen rock climber

Alejandro is scaling The Idwal Slabs, just below the Glyders in central Snowdonia, Wales.

The rock he is clinging to is known as the Lower Rhyolitic Tuff Formation.  It was formed approximately 449-458 million years ago in the Ordovician Period (Caradoc Series).

These igneous rocks are volcanic (extrusive) in origin.  The high silica content of the melt makes the lavas thick and slow-moving, trapping volatile gases. During heightened periods of activity, lavas of this type often form powerful, dangerous and explosive Plinian eruptions and pyroclastic flows.

For those of you who want a bit more technical information the Lower Rhyolitic Tuff Formation can be described lithologically as an acid ash-flow tuff, welded and non-welded, volcanic breccias and rhyolite intrusions.

This extrusive igneous formation overlies sedimentary rocks - sandstones and silty mudstones of Cwm Eigiau Formation. Sitting on top of the Lower Rhyolitic Tuff Formation is another, but distinct unit of volcanic rocks - The Bedded Pyroclastic Formation.

The climbing at this location which is 479 m above ordnance datum is described as:

"Spectacular climbing, set in some of the grandest mountain scenery in Wales; slab-routes galore at every grade. Mainly multi-pitch routes to 160 metres. Must dos for visitors include "Tennis Shoe" (HS), "Suicide Wall Route 1" (E2) and "Hope" (VDiff), all multi-starred classics. Beware of falling sheep." (

Alejandro was climbing "tennis Shoe"