#monkstone

(from: http://www.ibiblio.org/lighthouse/cym.htm)

Monkstone

1839 (unlit until 1925). Active; focal plane about 21 m (69 ft); white flash every 5 s. 23 m (75 ft) tower: the original 14 m (45 ft) stone tower with gallery, topped by a 9 m (30 ft) round cylindrical red fiberglass tower with its own small lantern and gallery. The stone tower is strengthened by vertical and horizontal wrought iron bands, which are painted red. Photographer's Resource has a page with a closeup, Lighthouse Digest has Tony Denton's closeup photo, Rene Schoeters has a 2017 closeup photo, and Trabas has Andreas Köhler's foggy distant view. The lighthouse is built on an underwater rock. A light on a cast iron skeletal tower was mounted on the stone base in 1925, and the fiberglass section replaced the cast iron section in 1993. Located about 5 km (3 mi) east northeast of Lavernock Point and 8 km (5 mi) south of Cardiff. Accessible only by boat. Site and tower closed. Operator: Trinity House. ARLHS WAL-043; Admiralty A5428; NGA 5864.