Skip to content

Garn - Rock Cannon 3 Traditional Geocache

Hidden : 9/23/2006
Difficulty:
1.5 out of 5
Terrain:
5 out of 5

Size: Size:   small (small)

Join now to view geocache location details. It's free!

Watch

How Geocaching Works

Please note Use of geocaching.com services is subject to the terms and conditions in our disclaimer.

Geocache Description:


Barmouth – 12 & 15 Cannon Holes

This is the third in a series of caches near to rock cannon in Meirionydd.

Rock cannon can be found all over north-west Wales, especially near mines and quarries.  The cannon were created for firing on celebrations & holidays and were used from the end of the 1700’s until black powder stopped being used in the slate industry.  The introduction of sticks of gelignite led to a different style of cannon being devised that didn’t need any holes in the rock.

Making a rock cannon was hard work.  All of the holes and grooves for fuses had to be cut with hand tools (please remember this if what you find doesn’t look that impressive!).  The cannon were cut into the tops of cliffs, slabs of rock or large boulders, the biggest having nearly 200 holes and the smallest having just 2.  Each hole was about 5” deep and 1” in diameter.  The later cannon had grooves connecting the holes which were filled with black powder to make the fuse.  The channels had to make a long enough fuse for each separate bang to be heard and each flash to be seen.

There are 2 sets of cannon near the cache, listed in G R Jones’ book.  I haven’t managed to find them yet, despite the photographs and co-ordinates in the book! (given below as waypoints)  They are near the old Cell Fechan managanese mine workings.  These were in a vein of ore that runs from Friog up towards to Maentwrog, with mines and pits along most of its length.  In Barmouth, the mine adits start just behind the church and work up the hill.  The mines were mainly worked in the late 19th century.  Please do not enter the workings – some of them are held up with dry-stone walls and others with bits of rotten Victorian-era wood!

This cache lies on CROW act Access Land but just outside the boundary of the Snowdonia National Park.  When the boundaries were drawn up, the easiest solution for the people planning the National Park was to draw the line around towns & industry and ignore them!  You can also see this effect on the map around Llanberis and especially around Blaenau Ffestiniog too.  The Snowdonia National Park a.k.a. “Parc y Polo” the only national park with a hole in the middle (but no minty flavouring…).

The cache is just off the summit of the hill behind Barmouth called Garn (Welsh for cairn).  There are great views from the top, a lovely place to watch the sunset but a place best avoided in a southwesterly gale!  The surrounding terrain is rocky and scrambly and often used by local outdoor centres for practising ropework on Mountain Leader training courses.  On the south edge of the rocky area are Barmouth Slabs.  These are probably the best venue for teaching rock climbing in Britain.  They are made from rough, Rhinog gritstone and come in 3 tiers.  If you visit the cache during the day, there will almost certainly be groups to watch, climbing on the cliffs.  If you visit in the evening, the place is usually deserted and there are some easy grade climbs to lead on the lower tier.

To get to the cache you can park in the small, free “Panorama Walk” National Park car park, where there is also a chemical loo.  It is then possible to follow the steep road uphill to the Slabs and then walk & scramble your way up to the cache (you will need to use your hands in places, depending on your choice of route).  The rock cannon are not on Access Land.  If you want to go and search for them, you will need to go back to the road and then follow the Public Footpath around the north of Garn and past the ruins of Cell Fechan.  To complete the circuit, you can then visit the Frenchman’s Grave, with its cache by mr sparks (GC7744). 

An alternative start, is to park in Barmouth and then head up through Hen Bermo (Old Barmouth).  My favourite route is to go up the alley between the Last Inn and Ty Gwyn, at the south end of town, and then wiggle my way up the hill.

More Information

“The Rock Cannon of Gwynedd” by Griff R. Jones ISBN 0-9533692-1-8

“Meirionnydd” Climbers’ Club Guides to Wales ISBN 0-901601-63-2 (Only interesting of you’re a climber!)

Merioneth-Manganese A website devoted to the local manganese mines

“Discover Barmouth” by Owena Wyn-Jones & John Jones ISBN 0-9541128-1-4 (History & walks – usually available from the Post Office in Barmouth)

Additional Hints (Decrypt)

18 fvatyr cnprf sebz gur fhzzvg ba n ornevat bs 330 zntargvp.

Decryption Key

A|B|C|D|E|F|G|H|I|J|K|L|M
-------------------------
N|O|P|Q|R|S|T|U|V|W|X|Y|Z

(letter above equals below, and vice versa)