Prehistoric flint scatter. A small quantity of worked prehistoric flint was recovered from Cronk Lammag by CH Cowley. No further details concerning the circumstances of the discovery were recorded and the grid reference relates to the summit of the hill for indicative purposes only. The antiquary Charles Harry Cowley was an avid collector of worked flint and coarse stone artefacts revealed by agricultural activity, mainly on farms located around Peel, and occasionally from further afield. He was active from 1900 until 1943. His entire collection of artefacts, together with a daybook cataloguing his discoveries, was later donated to Manx National Heritage.

It has been suggested that there were earthworks on the summit of Cronk Lheannag, in the field numbered 2128 on the 1869 1:2500 scale Ordnance Survey map, but these are not now apparent.

The findspot of a flint scatter of Mesolithic date.

The findspot of a flint scatter of Mesolithic date.

The findspot of a flint scatter of Mesolithic date.

A flint scatter of early prehistoric date.

A flint scatter of early prehistoric date.

A flint scatter of early prehistoric date.

Excavations were carried out on the site of a possible prehistoric barrow on the edge of Jurby aerodrome, formerly part of the estate of Ballamooar, by Group-Capt. F.R. Worthington (RAF Jurby) in 1953. The burial mound had been demolished more than a hundred years ago during agricultural improvements. The barrow was marked on a manuscript map of 1840 and clearly visible on aerial photographs but proved to be devoid of identifiable features.  One chisel-ended flint has been found at the site.

A record based on the field name "Upper Kil Field" which was interpreted by William Cubbon as a possible keeill placename. Dr Larch S. Garrad noted that in Manx speech a terminal "n" is sometimes dropped and therefore the name could be derived from "kiln".  No archaeological features have been recorded relating to either a keeill or kiln site however.

The Hill of Day Watch and Port of the Night Watch (Watch and Ward) for Jurby parish was at 'Knockmore' according to a document in the Castle Rushen Papers dated to 1627.  It has been suggested that the now lost burial mound of Cronk Mooar was the site of "Knockmore".  An alternative site at Cronk ny Arrey Lhaa, 0260.00, has been proposed. The majority of the Watch and Ward posts may well have been maintained on the same sites from the medieval period into the post medieval period.

Medieval burials. An annotated map showing antiquarian notes maintained at the Manx Museum records 'Graves found about 1875 by Corrin; ?Viking'. The observation was recorded by William Cubbon, director of the museum between 1932 and 1940. No further information is known and the annotation is marked at the grid reference provided.

Cronk Mooar was a medieval burial mound which was excavated fully before it was lost to coastal erosion in the mid-20th century. Cronk Mooar was surveyed and archaeologically removed by Mr (later Professor) I. Bowen at the request of the Air Ministry in 1939. Investigation was curtailed at the outbreak of war but was resumed by Dr G. Bersu in 1945. The 1939 excavation found that the mutilated, sandy mound appeared to have been 10-11 metres in diameter and about 3.0 metres high before its systematic removal down to the probable old turf-line. No trace of structures were found except for the remains of a wooden beam which protruded from an infilled central pit (not investigated until 1945). The mound material revealed some flints, including artefacts, burnt clay, charcoal, fragments of iron slag, burnt bone and evidently a number of nails which were erroneously considered (as proved in 1945) to belong to a ship burial. In 1945 the second excavation investigated the untouched soil beneath the removed mound; the humus above this level contained flints, iron slag, animal bone, possibly daub and some badly eroded prehistoric pottery. The central pit and decayed wooden beam, located by Bowen, was further investigated. The sides of the pit were lined with wooden planks forming a box or coffin which Wilson later interpreted as a probable 'Kammergrab' (Scandanavian timber-lined burial chamber). This feature contained at its base an extended Viking male burial, much decayed, together with a Celtic ring-headed pin, wooden-handled iron knife with leather sheath, bronze strap-distributor, a bronze strap-end made from a Celtic (probably Irish) book clasp and an iron sword (broken in three places) with an ornamented scabbard. Fragments of textiles were identified as the remains of a woollen cloak which had been worn by the deceased.

A crop mark of uncertain significance.

A crop mark of uncertain significance.

A crop mark of uncertain significance.

When the buried soils beneath Cronk Mooar burial mound, 1069.00, were excavated in 1945, six infilled post holes and shallow depressions were found to the north and northeast of the grave. These were  interpreted as the remains of a Neolithic settlement site.  In the south part of this area, were a series of plough marks and a probable field boundary scratched into the untouched soil; in three places these cut through the earlier post holes. The plough marks and field-boundary ran parallel to the existing land divisions and were regarded as dating to the Viking period.

The findspot of an early prehistoric flint scatter.

A mound with a peripheral ditch and associated banks and ditches which has been interpreted as the site of a possible Iron Age round house.

When the buried soils beneath Cronk Mooar burial mound, 1069.00, were excavated in 1945, six infilled post holes and shallow depressions were found to the north and northeast of the grave. These were thought to be associated with the flints and eroded prehistoric pottery found here and interpreted as the remains of a Neolithic settlement site.  In the south part of this area, were a series of plough marks and a probable field boundary scratched into the untouched soil; in three places these cut through the earlier post holes. The plough marks and field-boundary ran parallel to the existing land division and were regarded as Viking, 1069.30. Finds from the excavations are kept in the Manx Museum.

The site of a Bronze Age bowl barrow. The site has been ploughed over but survives as a grass-covered, ditchless mound measuring 31 metres in diameter and up to 0.8 metres high. In the past, several urns have been found at this mound, exposed by ploughing.

The site of an early medieval chapel or keeill and its associated burial ground, which are thought to date to the period AD500 to AD1000.   Two fragments of granite quern-stones have been found here as well as two boulders with incised linear crosses (Manx Cross No 13 and Manx Cross No 16) which are now kept in Jurby church, with casts kept in the Manx Museum. They are pre-Viking in date.

The site of an early medieval chapel or keeill and its associated burial ground, which are thought to date to the period AD500 to AD1000.   Two fragments of granite quern-stones have been found here as well as two boulders with incised linear crosses (Manx Cross No 13 and Manx Cross No 16) which are now kept in Jurby church, with casts kept in the Manx Museum. They are pre-Viking in date.

This cross slab is one of a group dating to the 6th to 12th centuries AD which have been found at or near St Patrick's church, Jurby. It is a flat water-worn boulder with cross incised on one face. It measures 37 centimetres by 16.5 centimetres by 5 centimetres. It is kept in the north porch of Jurby Church and a cast is kept in the Manx Museum.

This cross slab is one of a group dating to the 6th to 12th centuries AD which have been found at or near St Patrick's church, Jurby. It is a small boulder with a plain cross incised on one face. It  measures 30.5 centimetres by 22 centimetres by 13.3 centimetres.  It is kept in the north porch of Jurby Church and a cast is kept in the Manx Museum.