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Llaeron Earth Is It? Traditional Geocache

Hidden : 08/26/2006
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Size: Size:   small (small)

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Geocache Description:

Pont Llaeron, Bryneglwys Quarry, South Snowdonia

The best starting points for a day out are:

          Abergynolwyn – Small, free car park, pub, shop & café


Ride the Talyllyn Railway from Tywyn to its end at Nant Gwernol.  The TR has leaflets describing the way marked trails in the woods.

The cache is located on one of the original routes used to take slates from Bryneglwys quarry.  The tiles were loaded onto sledges that had a single set of wheels at the back and pulled by horse over the ridge and down to boats on the Dyfi near Pennal.  The way to the bridge is now very boggy.  The bridge at Pont Llaeron is a lovely spot to stop for a tea-break.  There is usually a breeze here to keep the midges away!

Just downstream from the bridge are the remains of a sluice gate.  Water was sent along a channel, cut into the rock, down to a reservoir of about 15 million gallons.  If you keep a lookout to your right on the way up, you can still see the valve tower and dam.  The dam was deliberately breached after the quarry closed, as people were worried that it would collapse and flood Abergynolwyn.  Please be careful near the water channel, as some parts have steep and slippery sides!

Once you’ve found the cache you can follow the track, up zigzags carved into the hillside, onto the Tarren ridge.  When you gain the ridge, turn right and walk up to the top of the small hill.  There are great views of the Dyfi estuary, Pynlimon and Cader Idris from here.  Looking south, how many wind turbines can you spot?

If you have time, follow the ridge to the summit of Tarren Hendre, with its cache (GC10RC4).  You can then descend its NE ridge to a forestry road and turn left for home or keep going carefully down to Bryneglwys Quarry.  If you would like to find out more about the quarry, visit the Talyllyn Railway Station in Tywyn.  Please do not explore the quarry itself.  Just before it closed, large parts of the mine were deliberately blasted to bits and are now very unstable!

If you’re descending from Tarren Hendre to find the cache, the best place to descend from the ridge into the forest is where there is a small metal gate in the fence.  This lies a little way (200m) beyond the stile and yellow footpath arrow on the ridge fence.


& “Slates From Abergynolwyn” by Alan Holmes ISBN 0 901337 73 0 (The story of Bryneglwys quarry and the Talyllyn Railway)

& “A Gazeteer of the Welsh Slate Industry” by Alan John Richards ISBN 0-86381-196-5 (Brief descriptions of every slate working in North Wales)

Additional Hints (Decrypt)

Vs lbh svaq guvf pnpur, lbh jvyy unir wbvarq na r-yrng!

Decryption Key


(letter above equals below, and vice versa)