A recent interest of mine has been in using LIDAR for archaeology research and as part of this I've been looking again at my local area.
Jenny Pit, Heddon on the Wall. LIDAR (DTM 1m) © Environment Agency 2022.
One of the features that has caught my eye is a LIDAR Digital Terrain Model (DTM) of the disused Jenny Pit which is located at NZ143662, just SE of Heddon Hall. Heddon Hall was named Mount Pleasant on the 1st edition 6" OS map. The old coal pit lies on Heddon land but just west of the boundary with Throckley.
I have always considered it likely that some of the early waggonways to the many coal pits on the east side of Heddon parish may have crossed the Throckley boundary to connect up with the changing routes of Throckley waggonways leading eventually to the staiths at Lemington.
Like many of the old pits and spoil heaps in our area, Jenny Pit was reclaimed by planting its area with trees, as was also done on Throckley land. The extent of the plantation now hiding Jenny Pit is, however, larger than many of the others nearby. For example, it is several times larger than the near circular plantation which surrounds Engine Bank Pit just to the south.
Luckily LIDAR DTM can see through trees. The data within the LIDAR image has been processed (exagerated) to reveal more detail.
I have always considered it likely that some of the early waggonways to the many coal pits on the east side of Heddon parish may have crossed the Throckley boundary to connect up with the changing routes of Throckley waggonways leading eventually to the staiths at Lemington.
Like many of the old pits and spoil heaps in our area, Jenny Pit was reclaimed by planting its area with trees, as was also done on Throckley land. The extent of the plantation now hiding Jenny Pit is, however, larger than many of the others nearby. For example, it is several times larger than the near circular plantation which surrounds Engine Bank Pit just to the south.
Luckily LIDAR DTM can see through trees. The data within the LIDAR image has been processed (exagerated) to reveal more detail.
Area around Jenny Pit, Heddon Hall & Heddon Colliery. Lidar dtm 1m enhanced.
What is revealed below the trees is a impression shaped like a tennis racket, with the handle pointing to the SE where it ends at the fence which forms the Throckley boundary. The field to the east has been cultivated for many years and appears completely smooth on LIDAR unlike the narrow rig & furrow ploughing which remains around the disused pit in the pasture land below Heddon Hall.
This looks very much like the pit-head terminus of a former waggonway extending onto Heddon land.
Directly below the site of the pit, running straight west to east (not entirely level as slightly downhill to the west) is what I had considered to be an old field boundary. Indeed it is shown as such on the 1st edition map, with trees shown along its length. The LIDAR image suggests that it is double banked, some 7m in width, although possibly with a ditch on its N (uphill side). Could this also be the remains of a waggonway. Its direction takes it just to the north of King Pit, on the 1st edition map. This eventually became the location of Heddon Margaret Colliery. There is also a Richard Pit to the north.
A waggonway connection to these Heddon pits with the Throckley waggonway system would have predated the collieries eventual connection to the south, with the railway successor of the Wylam Waggonway.
This looks very much like the pit-head terminus of a former waggonway extending onto Heddon land.
Directly below the site of the pit, running straight west to east (not entirely level as slightly downhill to the west) is what I had considered to be an old field boundary. Indeed it is shown as such on the 1st edition map, with trees shown along its length. The LIDAR image suggests that it is double banked, some 7m in width, although possibly with a ditch on its N (uphill side). Could this also be the remains of a waggonway. Its direction takes it just to the north of King Pit, on the 1st edition map. This eventually became the location of Heddon Margaret Colliery. There is also a Richard Pit to the north.
A waggonway connection to these Heddon pits with the Throckley waggonway system would have predated the collieries eventual connection to the south, with the railway successor of the Wylam Waggonway.
Location of Jenny Pit. Side by side georeferenced maps, National Library of Scotland: Six-inch 1st edition and ESRI World Imagery.
Beyond the racket-handle of Jenny Pit, on Throckley land, there are the small tree-covered remains of another coal pit, shown as Coronation Pit on a plan of Throckley estate. This could also have been served by the suggested waggonway as could several other old pits to the north of Reigh Burn, e.g. West Engine & East Engine Pits. There is a similar sized depression shown on the LIDAR image, close to Jenny Pit on the Heddon side of the boundary, which could be the remains of a ventilation shaft.
I contacted Les Turnbull about the LIDAR observation at Jenny Pit and he suggested the similarity to the waggonway termini depicted at The Far Pit (E) and The Middle Pit (D & C) of Heaton Main Colliery, shown on Watson's plan of 1805.
Figure of Watson's Waggonway Plan of Heaton Main Colliery from Les Turnbull, Coals from Newcastle, 2002.
It has to be said that there is speculation of other waggonways or tramways across these fields around Heddon Hall. For example, Historic England's Aerial Archaeology Mapping Explorer shows several possible features, but these appear to me less convincing. For example, one is the straight bank running W-E just above Jenny Pit, and another is one of the two converging features to the west.
Part of Historic England's Aerial Archaeology Mapping Explorer suggesting possible waggonways in the area surrounding Heddon Hall (2024). Jenny Pit is just right of centre (represented as an area of coal working).
The Aerial Mapping Explorer also shows a crop or soil mark, interpreted as the route of a waggonway, running diagonally through Throckley from the jucntion of the Hexham Road and Coach Road, through what is now a housing estate, towards the Leazes on the west side of Hallow Hill. It is recorded as Monument Number 1437960. Lidar shows its likely course running across the south face of the hill. It appears to join the line of the former mineral railway which runs just north of the Reigh Burn which served Throckley Isabella Colliery and probably on the line of the former waggonway discussed here from Jenny Pit.
Although a different interpretation of this line clearly doesn't preclude it from being the former course of a waggonway. it seems to me that the line observed here is close to that used by the pipelines of 24" and 30" (1869), for trade and domestic water supplies respectively, from a well originally constructed at the terminus of the Throckley Aqueduct (1866). Filter beds were built on the site of this well in 1875, and a valve house even later (a listed building c1890) located south of the Hexham Road, below the filter beds, and immediately west of the Coach Road junction, very close to where this supposed waggonway starts. Information taken from R W Rennison (1979) Water to Tyneside. See Map 9, p.112.
Although a different interpretation of this line clearly doesn't preclude it from being the former course of a waggonway. it seems to me that the line observed here is close to that used by the pipelines of 24" and 30" (1869), for trade and domestic water supplies respectively, from a well originally constructed at the terminus of the Throckley Aqueduct (1866). Filter beds were built on the site of this well in 1875, and a valve house even later (a listed building c1890) located south of the Hexham Road, below the filter beds, and immediately west of the Coach Road junction, very close to where this supposed waggonway starts. Information taken from R W Rennison (1979) Water to Tyneside. See Map 9, p.112.
Valve House, corner of Hexham Road & Coach Road, Throckley. Photo A Curtis (2013).
If the LIDAR image of Jenny Pit does suggest a waggonway terminus, presumably branching sidings where waggons could be stored, waiting to be filled or transported, then what could the circular feature at the northern end be. It is about 15m in diameter, too wide for a mine shaft. One possibility could be the platform of a horse-drawn gin. Perhaps something similar to the winding machinery for a close-by shaft sketched by Sir John Clerk and reproduced in Les Turnbull's book on page 48. Maybe Jenny Pit was operated in the pre-steam era or too far out to be considered for conversion.
The east side of the whim gin sited at the east end of the Pockerley Waggonway. Beamish Museum. From Wikipedia Commons.
If the feature does represent a waggonway serving Jenny Pit on Heddon land then its trajectory onto Throckley land would appear to take it along the gently curving boundary to the east (now a footpath into land which is now part of Tyne Riverside Park). The area further east has been greatly altered by the subsequent location of Throckley Isabella Colliery and eventual restoration of the land. The waggonway would have run north of the Reigh Burn, joining the Wylam Waggonway somewhere just below Newburn Grange Farm. Part of this route could have been later used by the mineral line which served Isabella Colliery.
Footpath on a track north of Throckley Pond looking very like a waggonway. Photo A Curtis (2024).
I have plotted the conjectured line (the lower purple line) on my revised plan of the Throckley Coal Pits & Waggonways.
If the line running across the field just south of Jenny Pit, also represents the line of a waggonway, perhaps later modified as a field boundary along which trees were planted, this could have served a pit (spoil heap and shaft) located close to the east of Station Road. This is just north of Flocktons and the location of Heddon Colliery. Another shaft is in the wood on the same side of the road just to the north, and, as it has sunk slightly in the centre, reveals a few courses of fine stone-built masonry. Perhaps this was a ventilation shaft.
If the line running across the field just south of Jenny Pit, also represents the line of a waggonway, perhaps later modified as a field boundary along which trees were planted, this could have served a pit (spoil heap and shaft) located close to the east of Station Road. This is just north of Flocktons and the location of Heddon Colliery. Another shaft is in the wood on the same side of the road just to the north, and, as it has sunk slightly in the centre, reveals a few courses of fine stone-built masonry. Perhaps this was a ventilation shaft.
Disused coal mine shaft below Heddon Hall. Photo A Curtis (2015).
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