A tradition exists that graves have been found immediately to the north in the neighbouring agricultural field. Despite inquiries made of landowners and farming tenants in the past, this tradition could not be proved.

A conjectured keeill-site listed by Kermode and marked as 'lintel-graves' on his 6 inch field map but these appear to derive solely from Oswald in 1860, who stated that on top of the hill near the stone circle 'there is an extensive cemetery of the dead arranged in stone graves.'  Bruce added that no keeill or burial-ground is marked on a 1793 estate-plan (in the Manx Museum Library) and the present owner and tenant-farmer could not recall the finding of graves or foundations during ploughing. Bruce concluded that while urn-burials, presumably Bronze Age, may have been found there was no real evidence for the site of a keeill and burial-ground. Haining in 1822 seems to have been the earliest authority regarding the 'extensive cemetery' but gives no more information than Oswald.

A possible prehistoric burial mound reported at Billown.

The site of a post-medieval corn mill.

A post-medieval lodge building on the Billown estate.

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.

The findspot of a flint scatter of Mesolithic date.

Flint scrapers and other worked flints associated with Heavy Blade activity, found by Canon Quine circa 1919 at Grenaby.

Billown Mansion was built in 1906 by T.J. Moore. It remains in use as a country house today.

A keeill-site listed by Kermode and marked as 'lintel-graves' on his 6 inch field map but these appear to derive solely from Oswald in 1860, who stated that on top of the hill near the stone circle 'there is an extensive cemetery of the dead arranged in stone graves.'  Bruce added that no keeill or burial-ground is marked on a 1793 estate-plan (in the Manx Museum Library) and the present owner and tenant-farmer could not recall the finding of graves or foundations during ploughing. Bruce concluded that while urn-burials, presumably Bronze Age, may have been found there was no real evidence for the site of a keeill and burial-ground. Haining in 1822 seems to have been the earliest authority regarding the 'extensive cemetery' but gives no more information than Oswald.

A possible early medieval keeill or chapel site reported at Billown.

The site of the dam for the millpond supplying a post-medieval corn mill on the Billown estate.

Undated standing stone. This granite pillar stands in the valley between the drumlins which form the hills at Billown and Skibrick. It stands adjacent to landscaped water features which were created during the 20th century in front of Billown House. These lakes themselves are a development of a series of dams which have been used to manage the flow of water therough this valley and south towards Castletown. The stone therefore lacks the landmark qualities of some of its neighbours, but nevertheless there is a well established local tradition that the Billown 'Circle' (PRN 0146) and the standing stones surrounding it are closely associated.

Modern lime quarry. Quarrying at Billown appears to have begun in 1834 at the northern end of the site. Two large quarry pits, apparently disused and one of them partially wooded, are shown on the Ordnance Survey 1:2500 First Edition mapping of 1868; two sets of three lime kilns, both marked 'Old Limekilns' are associated with them. To the south, the OS shows two further quarry pits, marked 'Quarries', associated with a further set of three 'Limekilns': these would appear to form the working part of the complex at this point. The more southerly of the two quarries is flooded, but adjacent to it is a structure marked 'Engine House'. This houses a steam engine used to pump the quarry sufficiently clear of water to allow working to continue. In 1892 the steam engine was replaced by a wind-powered pump, which subsequently was repositioned in a number of locations, as an additional quarry was begun further south. Quarrying recommenced at Billown during the 1990s at a location immediately to the NW of the complex. The grid reference marks the centre of quarrying activity up to the present day.

Modern lime quarry. Quarrying at Billown appears to have begun in 1834 at the northern end of the site. Two large quarry pits, apparently disused and one of them partially wooded, are shown on the Ordnance Survey 1:2500 First Edition mapping of 1868; two sets of three lime kilns, both marked 'Old Limekilns' are associated with them. The grid reference marks the centre of the older of the two abandoned quarries at the north end of the site, already wooded at the time of the Survey of 1868.

Modern lime quarry. Quarrying at Billown appears to have begun in 1834 at the northern end of the site. Two large quarry pits, apparently disused and one of them partially wooded, are shown on the Ordnance Survey 1:2500 First Edition mapping of 1868; two sets of three lime kilns, both marked 'Old Limekilns' are associated with them. The grid reference marks the centre of the more recent of the two abandoned quarries at the north end of the site at the time of the Survey of 1868.

Modern lime quarry. Quarrying at Billown appears to have begun in 1834 at the northern end of the site. The Ordnance Survey 1:2500 First Edition mapping of 1868 shows two active quarry pits, marked 'Quarries', associated with a further set of three 'Limekilns'. The grid reference marks the centre of the more northerly of the active quarry pits at the time of the Survey of 1868.

Modern lime quarry. Quarrying at Billown appears to have begun in 1834 at the northern end of the site. The Ordnance Survey 1:2500 First Edition mapping of 1868 shows two active quarry pits, marked 'Quarries', associated with a further set of three 'Limekilns'. The grid reference marks the centre of the more southerly of the active quarry pits at the time of the Survey of 1868. The quarry is marked as flooded, but a steam-powered pump enabled working to be continued. From 1892 this was replaced by a wind-powered pump.

Modern lime quarry. Quarrying at Billown appears to have begun in 1834 at the northern end of the site. The grid reference marks the centre of the most southerly of the quarry pits opened at Billown. The quarry is now flooded, but a wind-powered pump enabled working whilst active. This pump had been used at various locations on the site from 1892 onwards, but was latterly located at the SW corner of the quarry pit. The quarry is now managed as an Area of Special Scientific Interest under the Wildlife Act.

Modern limekiln. A large quarry pit, apparently disused and partially wooded, is shown on the Ordnance Survey 1:2500 First Edition mapping of 1868 (PRN 2138.10); a set of three lime kilns, marked 'Old Limekilns' is associated with it. The grid reference marks the position of the easternmost kiln, which is not thought to survive above ground.

Modern limekiln. A large quarry pit, apparently disused and partially wooded, is shown on the Ordnance Survey 1:2500 First Edition mapping of 1868 (PRN 2138.10); a set of three lime kilns, marked 'Old Limekilns' is associated with it. The grid reference marks the position of the central kiln, which is not thought to survive above ground.

Modern limekiln. A large quarry pit, apparently disused and partially wooded, is shown on the Ordnance Survey 1:2500 First Edition mapping of 1868 (PRN 2138.10); a set of three lime kilns, marked 'Old Limekilns' is associated with it. The grid reference marks the position of the westernmost kiln, which is not thought to survive above ground.

Modern limekiln. A large quarry pit, apparently disused, is shown on the Ordnance Survey 1:2500 First Edition mapping of 1868 at the northernmost extent of the site (PRN 2138.11); a set of three lime kilns, marked 'Old Limekilns' is associated with it. The grid reference marks the position of the westernmost kiln, which is not thought to survive above ground.