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Showing posts with label Aerial Photography. Show all posts
Showing posts with label Aerial Photography. Show all posts

Tuesday, 22 March 2016

Ordnance Survey Large Print Collection





This is the first blog requesting assistance to identify the location of one of our Ordnance Survey large prints for 2016.

The photograph is of a rural area, with a scattering of sizeable farms. A major “A” road or a key “B” road runs across the centre of the shot, with a minor road joining at an oblique angle, at a small hamlet. Near the junction there is a large shed, with a few vehicles parked in the yard.

Close magnification shows this road has a central hazard warning line.

Can you identify where this is? If so, please let us know.

By Medwyn Parry

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Thursday, 17 March 2016

The Crawford Collection - One of our Small, But Important Collections of Aerial Photographs






One of our small, but important collections of aerial photographs are annotated “CRAWFORD A.P.” on the reverse side of the prints.

Osbert Guy Stanhope Crawford (1896 – 1957) was an early pioneer of the use of aerial photographs for the investigation and interpretation of archaeological features in the landscape.

He studied geography at Keble College, Oxford, but refined his craft while serving in the First World War. During active service he was invalided back to Britain—twice —but he returned to serve with the Royal Flying Corps. His cartographic duties included using aerial photographs of the front line to produce up-to-date records of trench systems.

His talent and experience helped him to become the first Archaeology Officer for the Ordnance Survey, where he worked from 1920 to his retirement in 1946. Professor Peter Grimes (who later became a Commissioner, and then Chairman of RCAHMW) was appointed as his assistant in 1938.


The collection comprises 53 black & white aerial photographic prints, from various sources, including the RAF and Cambridge University. The earliest is of an area below the summit of Snowdon, taken on the 11 June 1923.

By Medwyn Parry

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Wednesday, 16 March 2016

Aerial Archaeology in winter – sunshine and rainbows over Anglesey





Low winter sunlight, combined with low vegetation and bare woodland, is a rare time for the aerial archaeologist hunting for earthwork archaeology and unrecorded monuments. This was especially true in Wales this winter where there was seldom a break in the gales and storms. Occasionally the sun did break through —and when it did, Toby Driver was able to get airborne to record scheduled monuments and known archaeological sites in winter conditions, as well as scouting for unrecorded sites in low, raking light.

One particularly stunning set of views of Anglesey was obtained on 11 February 2016 during a brief ridge of high pressure. Although it was raining on arrival at Caernarfon Airport, and the flight was brought to a close by heavy showers later on, for two hours Anglesey was bathed in glorious low winter sunlight with even the occasional rainbow. The flight proved valuable for documenting some of Anglesey’s stunning coastline and prehistoric monuments like Din Llugwy hut group, as well as later industrial monuments and landscapes along the north coast. The following views offer a flavour of some of the archaeological sites recorded.

Plas Gwyn prehistoric settlement and field system, on a hill to the south of Benllech, was originally discovered during Royal Commission aerial survey in 1999. The group of roundhouse footings can be seen enclosed within a polygonal boundary (AP_2016_0172).
http://www.coflein.gov.uk/en/site/300523/details/PLAS-GWYN/
Puffin Island or Priesttholm/ Ynys Seiriol, picked out in bright sunlight, rises like a whale from a dark winter sea (AP_2016_0199).

A detailed shot of the solitary twelth-century church tower of the monastery on Priestholm or Puffin Island, casting a long shadow across the surrounding vegetation (AP_2016_0205).
http://www.coflein.gov.uk/en/site/527/details/CELL+OF+PENMON+PRIORY+ON+
PRIESTHOLM+ISLAND%2C+PUFFIN+ISLAND+OR+YNYS+SEIRIOL/
Din Lligwy Iron Age and Romano-British hut group on eastern Anglesey is one of the most accessible sites of its type in north Wales. The settlement has impressive stone-built roundhouses alongside rectangular buildings (AP_2016_0241).
http://www.coflein.gov.uk/en/site/95541/details/DIN+LLIGWY+
SETTLEMENT%2C+MOELFRE/
Porth Wen brickworks is a remarkably complete set of ruined industrial buildings set in a secluded cove on the north Anglesey coast (AP_2016_0337).
http://www.coflein.gov.uk/en/site/40736/details/PORTHWEN+BRICKWORKS%3
BPORTH+WEN+SILICA+BRICK+WORKS/
As showers move in from the north-west, the spire of St Rhuddlad’s Church, Llanrhuddlad, is highlighted by a winter rainbow (AP_2016_0387).
 http://www.coflein.gov.uk/en/site/43642/details/ST+RHYDDLAD%27S+CHURCH%2C+
LLANRHYDDLAD%2C+ANGLESEY/

By Dr Toby Driver, Aerial Investigator


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Friday, 11 March 2016

What The RAF Flight Codes Can Reveal







The extensive collection of RAF aerial photographs held by the Royal Commission include vertical and low-level oblique views of Wales. The identification flight codes for the flights can reveal an incredible level of background detail.

One of the common identifiers starts with number 540, which is then normally followed by another unique flight reference number. The first portion identifies the film as originating from 540 squadron (motto “Sine Qua Non” – Indispensable), based at RAF Benson, Oxfordshire. Formed in October 1942 at Leuchars, as a Photographic Reconnaissance Unit (PRU), the squadron would be tasked with flights over Norway, France, Austria, Germany and Poland. A detachment was later based at Gibraltar, and flew over France, Italy and North Africa. Their first were Supermarine Spitfires, but the squadron was later re-equipped with de Havilland Mosquitoes. At the end of 1952, the squadron used the English Electric Canberra – arguably the best aerial photographic reconnaissance platform ever devised.

Several of the boxes of prints include a copy of the Photographic Reconnaissance Report (RAF Form 2047). When used in conjunction with the prints, they tell a fascinating story.

The paperwork for flight 540/538 reveals that on 25 June 1951 a type PR Mk. 34 Mosquito (number RG259) equipped with a port-facing F24 oblique camera, took off from RAF Benson. The pilot was Flight Officer Kepka, assisted by Flight Officer Dolezal (navigator/camera operator). They were tasked with a low-level oblique aerial photographic survey of two areas of the South Wales coast. The sortie run started at 12:35, and maintaining an altitude of 1,700ft, the first portion of the mission covered from Rumney, Cardiff to Beachley Head near Chepstow. The aircraft then headed west, and photographed the coastline from Mumbles Head, Swansea to Kenfig Burrows, near Porthcawl, finishing the survey at 13:35. The aircraft then returned to RAF Benson, landing at 14:10.

According to Form 2047, the processing of the 237 photographs commenced at 16:10 and was completed at 17:00. During inspection of the finished article, Corporal G.L. Sampson wrote a remark at the bottom of the form, “Thin cloud shadow on some. Two negs with shutter failure”.


The 15 x 14cm prints are a remarkable and detailed record of the coastal area, captured as a moment of time. In frame 0040 a portion of the Ebbw River can be seen the foreground, as well as the Alexandra Docks (NPRN 403430), and the distinctive Newport Transporter Bridge (NPRN 43157) in the top left of the photograph. Only three shots further on, frame 0043 captures a “White Funnel” paddle steamer (possibly the “Glen Usk”) making its way up the River Usk, as it passes the entrance to Alexandra Docks.

 The second leg of the flight – of Swansea Bay – also has some remarkable images. Frame 0153 is of the Clyne Valley, and in the centre of the frame Clyne Castle (NPRN 18354) and the layout of its formal garden (NPRN 265686) can be seen. A few moments later, frame 0163 shows a very different landscape, that of the distinctive Swansea Guildhall (NPRN 144) and the surrounding area.



Our aerial photographic collections include a huge variety of views, ranging from 1919 to the present day and many of these can be viewed on Coflein, our online database, or by visiting the Royal Commission’s library, which is open daily from Monday to Friday.
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Tuesday, 1 March 2016

Pre WWII Aerial Views of St David's Area






As part of its historical aerial photographic archive, the Royal Commission holds a small collection of 63 of low-level oblique aerial photographs of the St Davids area, Pembrokeshire. They bear the official stamp markings "Air Ministry" and "Ordnance Survey Archaeology Officer, Southampton". They were taken between 11:00 and 11:30 on the morning of the 25 March 1937, at an altitude of 2,000 ft.

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