Caer Estyn Hillfort (A Scheduled Monument) & Bryn Y Gaer Quarry, Caergwrle

Caer Estyn comprises the remains of a defended enclosure or hillfort. Such monuments probably date to the Iron Age period (c. 800 BC - AD 74), although several are known to date from the Late Bronze Age with activity through to the early post-Roman period. The earthworks of this hillfort can only be traced easily on the west and north-west sides, as a result of quarry damage.

The monument is of national importance for its potential to enhance our knowledge of later prehistoric defensive organisation and settlement. The site forms an important element within the wider later prehistoric context and within the surrounding landscape. The site is well preserved and retains considerable archaeological potential. There is a strong probability of the presence of evidence relating to chronology, building techniques and functional detail.

The scheduled area comprises the remains described and areas around them within which related evidence may be expected to survive. (Source: Cadw)

Disused quarry measuring approximately 1.9ha in size, opened in the 19th century for the extraction of sandstone with planning permission for the surface working of minerals granted in 1949. Now partially backfilled. Lies to the south of the village of Caergwrle, and immediately adjacent to the east of Caer Estyn Hillfort.