© Mapbox · © OpenStreetMap contributors · Boundary data © Cadw
Castell Caer Lleion is a prehistoric hillfort located in Conwy, North Wales, designated as a Scheduled Ancient Monument under the reference CN012. The site occupies a prominent hilltop position and represents an important example of Iron Age defensive settlement in the region, though occupation may have extended into earlier periods. The fort is defined by substantial earthwork defences comprising banks and ditches that enclose the summit, a characteristic feature of Welsh hillforts constructed to control territory and protect communities during the later prehistoric period. Its strategic location reflects the settlement patterns and defensive requirements of Iron Age communities in North Wales.
Castell Caer Lleion is a scheduled monument protected by Cadw under reference CN012. View the official record →
Castell Caer Lleion is a prehistoric hillfort located in Conwy, North Wales, designated as a Scheduled Ancient Monument under the reference CN012.
Castell Caer Lleion dates from the prehistoric period, and is classified as a hillfort. It is one of over 32,000 scheduled monuments protected across the UK.
Castell Caer Lleion is a Scheduled Ancient Monument, legally protected by Cadw — the body responsible for designating and safeguarding heritage sites in Wales. The official designation reference is CN012.
Several scheduled monuments lie within 10 km, including Ffrith Llwynhwfa Burial Cairn (5.9 km), Early Fields and Dwellings near Maen-y-Bardd (6.3 km), Bryn Castell (6.4 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Castell Caer Lleion's history, each drawn from the record and mapped to the exact spot:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Castell Caer Lleion stands on Unnamed Extrusive Rocks, Ordovician, bedrock that formed in the Ordovician. The rock here is felsic lava.