Porth-y-Post and Porth y Corwgl are two of a series of small sheltered coves on the west coast of Holy Island. They are mostly of sand and shingle, and backed by a sea wall. A road (Lon Isallt) runs behind the beaches. Porth-y-Post (above) is approximately 100 yards wide and Porth y Corwgl is about 50 yards wide. Both are flanked by rocks and low cliffs of mica-schist which show unusual swirly patterns. The sea water is often crystal clear in summer, making them ideal for swimming, snorkelling, scuba diving etc.Roadside parking is available just behind Porth-y-Post and access to the shore is down a few steps. Porth y Corwgl (Grid Ref : SH240796) - one of three Anglesey beaches with this name, can be reached by following a public footpath about 200 yards further along Lon Isallt. The name Porth y Corwgl translates as 'Coracle Cove'. Dogs are allowed at all times on these beaches.