Cavern Reflection.Lydstep. Cavern Reflection.Lydstep.Pembrokeshire. A secluded Sea Cave/Cavern at Lydstep which holds a secret past, also known as ‘Smuggler’s Cove’. This Cove can only be reached at low-tide. The Coastal scenery is breathtaking all around. Lydstep Cavern’s is a captivating area with superior rock formations. A view not to be missed.