Wolfscastle Country HotelLandscape photo with tree in foreground.

Geology

Pembrokeshire has a greater variety of rocks and scenery than any equivalent-sized area of the British Isles. Geologists from all over the world travel here to see the county's incredible rocks and landscapes. And the Western Landsker region around Wolfscastle is particularly rich in geology.

The hotel is located close to, or even on top of, an old fault line known as the Pwll Strodur Fault, which separates Cambrian sandstones (to the west) from Ordovician slates (to the east). These rocks are around 500 million years old and formed from sediments deposited on an ancient sea bed located near the South Pole - moved to their present location through continental drift.

Wolfscastle lies within the catchment of the Western Cleddau river and the geology of the river basin is highly complex. The eastern half is mostly underlain by Ordovician slate, which has been quarried at Sealyham and Scleddau, but the main hill masses are reinforced by much harder volcanic igneous rocks, best seen in the crags at Treffgarne Rocks, Garn Turne and Wallis Moor.

The famous Treffgarne Rocks overlooking the hotel are ancient rhyolitic volcanic plugs that have been weathered into their amazing shapes over millions of years. The crags can be easily reached from the hotel.

A very rare mineral called Brookite has been discovered in the rocks around Treffgarne as well as traces of gold and tin. There are legends of ancient gold mines in the area and it's thought the Romans probably had small workings around the rocks.

Some local geological highlights include...

Treffgarne Rocks and Gorge

Firstly, don't miss a ramble up to the dramatic Treffgarne Rocks which overlook the hotel. Secondly, the local gorge walk is of the most enjoyable rambles in Pembrokeshire. It starts locally at Nant-y-Coy Mill and then heads through the gorge, passing river and woodland. It follows a path above the Western Cleddau river and the return walk passes through woodland.

St. Davids Peninsula and Ramsey Island

Cambrian sedimentary rocks give way to Precambrian rocks near the south-western tip of the peninsula, close to the small islands. The secluded bay at Porthlysgi is one of the jewels of this coastline. Beyond it is Ramsey Island. A boat trip around the island is a memorable experience.

Preseli Mountains

Open moorland covers ridges underlain mainly by slate, but at the eastern end of the ridge there is a scattering of dolerite crags which were the source of Stonehenge's mysterious bluestones. Enjoy stunning views as you make your way across these magical mountains, which are rich in geology and archaeology and great for hiking and horse riding enthusiasts.

Newgale Sands

A fantastic beach that offers three miles of golden sand, backed by a shingle ridge. The cliffs in the foreground are of Cambrian sedimentary rocks, but to the west you'll find a stunningly rugged coastline of Precambrian volcanic rocks. Popular with swimmers, surfers and fishermen, parts of the beach are patrolled by lifeguards during peak season.