The Swanscombe Skull-site NNR is located within Barnfield Pit, Swanscombe which is one of Europe's most important Palaeolithic sites. It is located on a fluvial terrace deposit above the south side of the Thames, originally known as the Swanscombe 100-ft terrace but now formally named the Boyn Hill/Orsett Heath Formation (1). Here, a fossil human skull was recovered from one horizon [The Upper Middle Gravel], with three separate refitting parts of the same skull being found on three separate occasions, in 1935, 1936 and 1955 (2, 3). The area was first recognised as containing artefacts and faunal remains in the late 19th century (4), they have been demonstrated through a long history of subsequent investigations (5-8), to be exceptionally rich in flint tools from Palaeolithic occupation (9, 10). The first investigation to locate the skull was undertaken by A.T Marston, his observations at the south eastern end of the pit. Here he identified the presence of a channel or sump cutting the lower middle gravel which left a series of beaches at its margin, the first of these revealed the fragments of skull. (8)

There are three main phases of deposits at Barnfield Pit. The lowest phase (I) consists of gravels and silts/sands [the "Lower Loam"] with a Clactonian lithic industry (cores, flakes and flake-tools) dating to early in the Hoxnian interglacial. This phase includes undisturbed Clactonian occupation surfaces within, and at the top of, the Lower Loam, as well as animal bones and other paleo-environmental remains such as molluscs and ostracods. The middle phase (II) consists of gravels and sandy gravels. These contain a rich Acheulian lithic industry and numerous fossil animal remains, with numerous fresh condition handaxes and debitage from their manufacture attesting to occupation on the spot. The skull pieces were found within the phase II deposits, at the base of the Upper Middle Gravel. (9)

Further information (10-13)

<1> Bridgland DR, 1994, Quaternary of the Thames., p193-218 (Monograph). SKE32233.

<2> Swanscombe Committee, 1938, Report on the Swanscombe skull: prepared by the Swanscombe Committee of the Royal Anthropological Institute. (Article in serial). SKE32212.

<3> Ovey, C. D., 1964, The Swanscombe Skull: a Survey of Research on a Pleistocene Site (Monograph). SWX9319.

<4> Stopes H,, 1895, A prehistoric metropolis in Kent. (Article in serial). SKE32279.

<5> Smith RA, Dewey H,, 1913, Stratification at Swanscombe: report on excavations made on behalf of the British Museum and H.M. Geological Survey., p 177-204 (Article in serial). SKE32207.

<6> Smith R.A and Dewey H, 1914, The High Terrace of the Thames: report on excavations made on behalf of the British Museum and H.M. Geological Survey., p 187-212 (Article in serial). SKE32181.

<7> Wymer, JJ, 1968, Lower Palaeolithic Archaeology in Britain as represented by the Thames Valley. (Monograph). SKE29697.

<8> Conway BW, McNabb J, & Ashton N, (ed's), 1996, Excavations at Barnfield Pit, Swanscombe, 1968–72. (Monograph). SKE32240.

<9> Wenban-Smith F. F., 2004 (March), The Stopes Palaeolithic Project: Final Report, site #2 (Unpublished document). SWX12877.

<10> Wenban-Smith FF,, 2009, Henry Stopes (1852-1902): engineer, brewer and anthropologist. (Article in serial). SKE32263.

<11> Wessex Archaeology, 1993, The Southern Rivers Palaeolithic Project, Report No.2: The South West and South of the Thames [Vol. I - text], NWK 4.19 (Monograph). SWX6569.

<12> Essex County Council & Kent County Council, 2003, Archaeological Survey of Mineral Extraction Sites around the Thames Estuary, #911 (Unpublished document). SKE12012.

<13> Wessex Archaeology, March 2004, Swanscombe Heritage Park and Craylands Gorge, Swanscombe, Kent. Archaeological and Geological Desk Based Assessment (Unpublished document). SWX12883.