3.9 - PORTH CLAIS - ST JUSTINIAN`S
Distance 4 miles .
Porth Clais at the mouth of the River Alun , in a valley carved out by glacial meltwater 10,000 to 5,000 years ago .
With 4 lime kilns and old quarries at the head of the inlet . Area rich in wild spring flowers .
The rugged coast continues , passing Carreg Fran , just offshore , and the island Carreg Yr Esgob , with a narrow arch just visible . The path then turns inland , to drop down to the bay at Porthlysgi .
Around the coast , and on the islands between Porthlysgi / Ramsey sound , can be seen some of the oldest rocks in Pembrokeshire , Pre - Cambrian , 1,000 million years old.
On to a cove with the strange name of " Ogof Mrs Morgan " .
Then , Pen Dal-aderyn with excellent views to- Ramsey Island - Ynys Dewi ( St David`s Island ) - 3/4 mile away , across the Sound .
A good spot for watching gannets feeding . And seals and porpoise , taking advantage of the fish brought to the surface by the swift flowing waters , at up to 7 knots , through the sound .
"The Bitches" , in the narrowest part of the Sound , a dangerous strip of sea , with a series of rocks , submerged at high tide .
Views also to the smaller islands / rocks south of Ramsey / "Ynys Cantwr" (The Enchanters Isle ) / "Ynys Bery" ( Falcon`s Isle ) / "Ynys Eilun" .
Further on just passed a fenced area / an old shaft of Penmaenmelyn C19 copper mine / just above the path is a large "Glacial Erratic" transported to this spot 7000yrs ago .
Views inland to the outcrops of hard igneous rocks "Carn Fach" , "Carn Goch ", Carn Parc y ffynnon "........
At "Carn-ar-Wig" / is and old quay / and on to St Justinian`s Lifeboat Station perched high on its slipway , built in 1912 .
Nearby ruins of a 16C chapel and a saints well .
Car Park - Porth Clais , St justinian`s .