Geology of Snowdonia
for Hillwalkers & Mountain Leaders


One day field trip with Paul Gannon
author of
Rock Trails Snowdonia
Rock Trails Lakeland
Rock Trails Peak District
Rock Trails Scottish Highlands
Rock Trails South Wales

This practical field course is specifically aimed at hillwalkers, as well as at mountain leaders, youth leaders and teachers who want to expand their knowledge of mountain landscapes.

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Glaslyn, a glacial lake on Snowdon; with a glimpse of the larger Llyn Llydaw in the distance; both lakes are part of the ‘staircase’ of glacial cwms or corries and some of the most dramatic glacial scenery in Britain.

The field course will introduce you to the basic concepts of modern geology such as plate tectonics, volcanoes and glaciation, and their role in creating the mountain scenery of Snowdon and other mountain areas. You will learn to identify landforms and how they were made. You will also see how geology can be used as a navigational aid.

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A volcanic rock erupted by the hottest and most violent type of volcano, a ‘pyroclastic flow’; see this and other types of distinctive and graphic rocks on this geology walk on Snowdon.

These courses are specifically designed for those without any background in geology. The features that you will learn to indentify are all things that are easy to see as you walk or climb the hills and mountains. Everything is explained in everyday language. Geology can be a very difficult subject to get to grips with because of its fearsome scientific vocabulary, but this course is aimed at making sense of geology for the ordinary hill lover.

What the reviewers say:

“I felt swallowed up in the enormity of the place. Even with the small amount of knowledge gained , my eyes had been opened so much more to the mountains that I love. It was hard to leave this special place.” Jenna Maryniak,
Trail Magazine, on a geology walk in Snowdonia

‘Paul Gannon aims his writing squarely at the walker’ Emily Rodway,
TGO magazine on Rock Trails Snowdonia

‘Others have dealt with the geology but few can have described it with such enthusiasm and clarity’, Steve Matthews,
Cumberland News on Rock Trails Lakeland

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The courses are limited to a maximum of ten people to ensure everyone has time to ask questions and get the most out of the day. The exact route taken will depend on the weather and the group on the day. A typical good weather day may involve following the Miners' track to where it meets the Pig track and then returning via the Pig track. On a day with very bad weather the trip may involve an off-path walk down the great glacial trench of the Llanberis Pass from Pen y Pass to Llanberis. The course involves walking on rough stony tracks and on rough terrain. The course also involves up to 500 metres of ascent and descent on the Miners and Pig Tracks. You need to be fit enough to cope with this level of effort. Remember it can be cold and wet at any time of the year in Snowdonia and you must bring proper clothing, including boots, as well as food and drink for the day. The course runs from 10am to 4 or 5pm.


Cost - £30 per person for a one day course


Joining details and course notes will be sent out on receipt of completed booking form & cheque.

LW welded tuff
A ‘welded tuff’; another type of volcanic rock erupted in a pyroclastic flow

To return to the site home page and on line booking links click here

For information about the Rock Trails books
click here

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