Scheduled Monuments in Pembrokeshire along with a wide variety of post-medieval sites from coalmines, kilns and dovecotes through to World War II defensive structures. Scheduled Ancient Monuments (SAMs) have statutory protection. The compilation of the list is undertaken by Cadw Welsh Historic Monuments, which is an executive agency of the National Assembly of Wales. The list of scheduled monuments below is supplied by Cadw with additional material from Royal Commission on the Ancient and Historical Monuments of Wales and Dyfed Archaeological Trust. Scheduled Monuments in Pembrokeshire Pembrokeshire is the fifth-largest county in Wales, but has more Ancient Monuments (526) than any except Powys. This
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