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Historic England Research Records

Cronkshamerk

Hob Uid: 31092
Location :
Isle Of Man
Ayre
Lezayre
Grid Ref : SC3920094100
Summary : Earthwork remains of an Iron Age hill-fort with signs of vitrification.
More information : (SC 39209410) Camp (NR) (1)

Iron Age Hill Fort. (2)

Cronkshamerk (5) or Cronk Sumark. The sides of the hill to N and W are precipitous and require no artificial defence. The S side is steep but defended. The E side is a gradual slope and has the strongest defences. At the NW the hill rises to a steep peak which inthe SW has been quarried away. The main defence is the inner of 2 banks which starts at the NE corner of the hill and encircles its eastern and southern sides. An outer and smaller bank starts close to the inner but diverges from it and may cut off the promontory to the E. The terraced road on the S whichleads round the hill to the quarry and lies below the inner bank may be a continuation of this outer bank to the S. On the top of the hillinside these outer defences, and to the NW, are two square levelled platforms defended by banks and separated by two ditches and a causeway. The main inner bank was burnt and contained vitrified material. Burnt slate occured in one of the two small inner enclosures. Dr. Bersu suggested that the defences might be of several periods but in that case the main outer and inner banks did not appear on superficial evidence to be contemporary. There may be an entrance on the south. A possible example of a vitrified fort. Unexcavated and unplanned in detail. (2-5)

A good general report of the site but no justification could be found for the statement that the quarry road may be a continuation of the outer bank. No entrance was found through the outer defences. The inner fort 'B' is a grass covered almost square enclosure with average sides of 20.0m. It has an entrance 3.0m wide in the NE which leads down by a footway to a crude ditch which partially encircles thepeak. The ditch is 5.0m wide amd 0.3m deep with a causeway 1.0m wide at E. 'B' is surrounded by a bank average 4.0m wide and 0.8 max inner height. Its outer slopes merge with the natural slopes of the peak. Between B and its twin peak A are 3 crude ditches with two intervening banks. The most westerly is the strongest and partially encircles A. This ditch is 3.0m wide and 1.5m deep. It has no causeway. Its outerbank fades to a weak glacis type bank with inner terrace 3.0m wide. The remaining two ditches each have a narrow causeway in line between A and B. The inner bank 'C' of the ?IA Hillfort is of glacis type with weak unsurveyable traces of an inner slope. The outer bank 'D' is stronger and consists of a terrace ave 7.0m wide with a spasmodic bank on its outer lip. The bank has an ave inner ht of 0.2m. The outer slopes of C and D merge with the natural hill slopes. No trace of a water supply was found. A notice indicates that it is protected. Re-surveyed at 1/2500. Ground photograph. (6)

(SC 39209410) Cronkshamerk (NAT) Hill Fort (NR) (7)

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Source Number : 1
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Source details : OS 6" 1869
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Source Number : 2
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Source details : OS Ancient Britain Map Index [1951]
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Source Number : 3
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Source details : Proc Isle of Man Nat Hist Antiq Soc NS 5 No 2 1946-1950 pp189-194 Plan (M A Cotton and B R S Megaw)
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Source Number : 4
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Source details : Archaeol J 111 1954 p92 (M A Cotton)
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Source Number : 5
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Source details : Suggested Revised Spellings of Place-Names Mss for OS plans 31.1.55 (B R S Megaw)
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Source Number : 6
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Source details : F1 JR 04-NOV-55
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Source Number : 7
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Source details : OS 6" 1957
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Monument Types:
Monument Period Name : Iron Age
Display Date : Iron Age
Monument End Date : 43
Monument Start Date : -800
Monument Type : Bivallate Hillfort
Evidence : Earthwork
Monument Period Name : Early Medieval
Display Date : Early Medieval
Monument End Date : 1066
Monument Start Date : 410
Monument Type : Bivallate Hillfort
Evidence : Earthwork

Components and Objects:
Related Records from other datasets:
External Cross Reference Source : National Monuments Record Number
External Cross Reference Number : SC 39 SE 4
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Related Warden Records :
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Associated Activities :
Activity type : FIELD OBSERVATION (VISUAL ASSESSMENT)
Start Date : 1955-11-04
End Date : 1955-11-04