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processes, mostly quiet, which have not yet been adequately researched. The detailed
reconstruction of coastline histories and the changing environments available for human
use will be an important theme for future research.
D So great has been the rise in sea level and the consequent regression of the coast that
much of the archaeological evidence now exposed in the coastal zone, whether being
eroded or exposed as a buried land surface, is derived from what was originally terrestrial
occupation. Its current location in the coastal zone is the product of later unrelated
processes, and it can tell us little about past adaptations to the sea. Estimates of its
significance will need to be made in the context of other related evidence from dry land
sites. Nevertheless, its physical environment means that preservation is often excellent,
for example in the case of the Neolithic structure excavated at the Stumble in Essex.
E In some cases these buried land surfaces do contain evidence for human exploitation
of what was a coastal environment, and elsewhere along the modem coast there is similar
evidence. Where the evidence does relate to past human exploitation of the resources
and the opportunities offered by the sea and the coast, it is both diverse and as yet little
understood. We are not yet in a position to make even preliminary estimates of answers
to such fundamental questions as the extent to which the sea and the coast affected
human life in the past, what percentage of the population at any time lived within reach of
the sea, or whether human settlements in coastal environments showed a distinct
character from those inland.
F The most striking evidence for use of the sea is in the form of boats, yet we still have
much to learn about their production and use. Most of the known wrecks around our coast
are not unexpectedly of post-medieval date, and offer an unparalleled opportunity for
research which has as yet been little used. The prehistoric sewn-plank boats such as
those from the Humber estuary and Dover all seem to belong to the second millennium
BC; after this there is a gap in the record of a millennium, which cannot yet be explained,
before boats reappear, but built using a very different technology. Boatbuilding must have
been an extremely important activity around much of our coast, yet we know almost
nothing about it, Boats were some of the most complex artefacts produced by pre-modem