South Pembrokeshire South Pembrokeshire South Pembrokeshire () was one of six local government districts of Dyfed, Wales from 1974 to 1996. It was formed on 1 April 1974 under the Local Government Act 1972, from the following parts of the administrative county of Pembrokeshire: The map shows the district as defined above. However, in 1981, the communities of Bletherston, Clarbeston, Llandeilo Llwydarth, Llandissilio West, Llangolman, Llanycefn, Llys y Fran, Maenclochog, Mynachlog-ddu, New Moat and Vorlan were transferred to Preseli district. It was abolished on 1 April 1996, merging with its neighbouring district of Preseli Pembrokeshire to form a reconstituted Pembrokeshire unitary authority.
Pembrokeshire landscape was subject to considerable change as a result of ice ages; about 20,000 years ago the area was scraped clean of soil and vegetation by the ice sheet; subsequently, meltwater deepened the existing river valleys. While Pembrokeshire is not usually a seismically active area, in August 1892 there was a series of pronounced activities (maximum intensity: 7) over a six-day period. The Pembrokeshire coastline includes numerous bays and sandy beaches. The Pembrokeshire Coast National Park, the only park in the UK established primarily because of its coastline, occupies more than a third of the county. The park contains the