Though very near the coast the hill of Condolden (or Kingsdown) is among the very few areas in Cornwall outside Bodmin Moor which exceeds 1000 feet. At Trethevy is the waterfall known as St Nectan's Kieve in a wooded valley. The beach at Bossiney Haven is close by and Trebarwith Strand, just half an hour's walk south of Tintagel, is one of Cornwall's finer beaches, boasting clear seas, golden sands, and superb surf. There is also a small beach at Tintagel Haven immediately north of the castle, as well as a cave known as Merlin's Cave under the castle. A stream called the Trerammett River flows from Treven to Tintagel Haven.