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Castell Perthi-Mawr;Castell Cilcennin

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Map ReferenceSN55NW
Grid ReferenceSN5283058970
Unitary (Local) AuthorityCeredigion
Old CountyCardiganshire
CommunityCiliau Aeron
PeriodIron Age
1. Hillfort, 05 ha, protected by two widely separated banks, without ditches, up to 2m high. Entrance of 'zig-zag' type. Inside, footings of a round house 6m diameter, surviving as low turf covered wall. TGD from CCH 1994, 253.
2. Aerial reconnaissance on 19th Dec 1999 (neg: 995128-41/3) shows internal hut to be tri-partite structure; possibly three overlapping rings representing different hut phases, or a central hut with two accreted 'D'-shaped enclosures. AP shows well-marked holloway, probably contemporary, approaching hillfort entrance. TGD
3. Concentric banked enclosure, generally ovoid, c.160m E-W by 110m overall, set about the E spur of an isolated summit plateau; within the circuit of the inner enclosure, 110m ENE-WSW by 60m, runs an apparent quarry ditch, 7.0-10m across, most clearly defined on the SE, where its inner edge appears to be kerbed in some fashion; a possible building platform noted by OS, c.10m in diameter, lies acrosss the line of this feature on the E of the NW-facing entrance; the outer circuit, c.20m distant on the W & NW, reduced to c.10m elsewhere, notably along the SE where the two circuits produce a distinctive terraced effect, can be seen in erosion features to have originally been a slab-faced wall; the outer entrance, set at a re-entrant on the NNW, is offset from the inner; APs show an additional bank/counterscarp on the NW, presumably contining about the SW, where the ramparts face level ground, this continues the line of the rampart E of the outerentrance; the E bank terminals of both entrances appear to have been expanded/enhanced.
Several later features are apparent: across the E part of the interior are the largely turf-covered remains of a stone/stone founded range, 20m NNW-SSE by 10-6.0m, best preserved on the S where it is apse-ended; a length of turf-covered wall connects the W terminals of the outer & inner entrances, this may be connected with a posssible shelter, c.5.0m in diameter, set above the outer entrance, in the lee of the inner rampart.
Elements of a field system can be observed on sloping ground NW of the Castell (Nprn401204).
J.Wiles 13.09.04

RCAHMW AP 96-CS 0662-4
RCAHMW AP965053/45-7