3 - Aberdaron to Porth Oer
The inlet at Porthorion with Sea Caves
Purple Jasper is found here - mined at Carreg Quarry (on the Coast Path)
Dinas Fawr (formed of pillow lava), is joined at low tide to the mainland
Ref: NW 248
Date: 11/10/2021
Location: SH 1567 2865