Weeting, Norfolk - Grimes Graves - aerial view, south - offical postcard c.1960s

Postcard
• Picture / Image:  Grimes Graves, Norfolk - aerial view from south
• Publisher:  Ministry of Public Buildings and Works [government department]
• Postally used:  no
• Stamp:  n/a
• Postmark(s): n/a
• Sent to:  n/a
• Notes / condition: 

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Text from the free encyclopedia WIKIPEDIA may appear below to give a little background information (internal links may not  work) :

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Grime's Graves is a large Neolithic flint mining complex near Brandon in England close to the border between Norfolk and Suffolk. It was worked between circa 3000 BC and circa 1900 BC, although production may have continued well into the Bronze and Iron Ages (and later) owing to the low cost of flint compared with metals. Flint was much in demand for making polished stone axes in the Neolithic period. Much later, when flint had been replaced by metal tools, flint nodules were in demand for other uses, such as for building and as strikers for muskets.

The scheduled monument^[1] extends over an area of some 37 ha (96 acres) and consists of at least 433 shafts dug into the natural chalk to reach seams of flint. The largest shafts are more than 14 m (40 feet) deep and 12 m in diameter at the surface. It has been calculated that more than 2,000 tonnes of chalk had to be removed from the larger shafts, taking 20 men around five months, before stone of sufficient quality was reached. An upper 'topstone' and middle 'wallstone' seam of flint was dug through on the way to the deeper third 'floorstone' seam which most interested the miners.

In order to remove the chalk efficiently, the ancient miners built wooden platforms and ladders as they dug downwards and piled the spoil around the shaft opening using turf revetments to hold it in place for the season, when the shaft and all its galleries were thoroughly and fastidiously backfilled to promote stability. The landscape around Grime's Graves has a characteristic pockmarked appearance caused by the infilled shafts. This is probably what inspired the later Anglo-Saxon inhabitants of the area to name it after their god Grim (literally the masked, or hooded one, a euphemism for Woden). Although the pagan Anglo-Saxons seem to have had some idea of what the site was, as the name of the site means literally 'The masked one's quarries,' (or Grim's Graben,) it wasn't until Canon William Greenwell excavated one of the shafts from 1868- 1870 that their purpose was discovered in modern times. Other similar sites have been found in chalk or downland areas, such as at Cissbury and Spiennes in Belgium.

The miners used picks fashioned from the antler of red deer. They probably used wooden shovels, although this is only inferred by analogy with other flint mines with better conditions for the preservation of artefacts. Analysis of the antlers (Clutton-Brock 1984: 25) has shown that the miners were mainly right-handed and favoured the left antlers out of those that were naturally shed seasonally by the deer. The 28 pits excavated up to 2008 yielded an average of 142.5 antler picks each, of which an average of 14.8 have been found to be left-handed.

Once they had reached the floorstone flint, the miners dug lateral galleries outwards from the bottom, following the flint seam. The medium-depth shafts yielded as much as 60 tons of flint nodules, which were brought to the surface and roughly worked into shape on site. The blank tools were then possibly traded elsewhere for final polishing. It is estimated that 60 tons of flint could have produced as many as 10,000 of the polished stone axes, which were the mines' main product. Extrapolation across the site suggests that Grime's Graves may have produced around 16-18,000 tonnes of flint across the 433 shafts recorded to date. However, there are large areas of the site covered by later activity which are believed to conceal many more mineshafts.

There were other hard stones used for axe manufacture, those of the Langdale axe industry and Penmaenmawr in North Wales being traded across Europe, as well as other less well-known igneous and metamorphic rocks. The axes were much in demand for forest clearance and settlement, development of farmland for arable crops and raising animals, which characterises the Neolithic period.

type=printed

city/ region=weeting

period=post-war (1945-present)

postage condition=unposted

number of items=single

size=continental/ modern (150x100 mm)