Preseli Pembrokeshire Pembrokeshire district. On 1 April 1996 the district was abolished by the Local Government (Wales) Act 1994 and merged into a reconstituted county of Pembrokeshire. Preseli Pembrokeshire Preseli Pembrokeshire (, ; ) was one of six local government districts of Dyfed in West Wales from 1974 to 1996. Until 1987 the name of the district was Preseli. The district took its name from the Preseli Hills. It was formed by the Local Government Act 1972 on 1 April 1974 from the northern part of the administrative county of Pembrokeshire - specifically, the municipal borough of Haverfordwest, the urban districts of
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