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Excavating the mound
Trial excavations on top of the mound showed it
had been built up of layers of compacted rubble. Nothing was found of
the buildings which once crowned the high point of the castle, but we
did get pottery dating from the late 11th century, when the castle was
built. The geophysical survey showed a line running in a rough circle
about 8m inside the rim of the mound. Could this be the shell keep wall,
enclosing a smaller stone keep?
The mound has been modified and re-used many times
over the years. From the 16th century, its flat top was used as a bowling
green. A fragment of a white ceramic bowling ‘jack’ is an
unusual archaeological find from the south side of the mound.
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The Ice-House
The 19th-century icehouse, under the northern part
of the mound, was emptied out. It has a central well over 4m deep, and
must once have held enough ice for all the inns in Bedford.
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Castle Lane
The Council asked Albion Archaeology to prepare an up-to-date
report on the archaeology for the benefit of architects entering the
RIBA Castle Lane design competition, launched in February 2004. (link
to RIBA website)(http://www.riba.org/go/RIBA/Also/Competitions_3829.html).
A desk-based study was carried out of the car parks. This area was once
occupied by the inner and outer baileys – the busiest parts of
the castle. It’s amazing to think that under the tarmac is one
of the richest archaeological sites in the country!
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Modelling the Castle
To assess the significance of buried archaeological layers, we constructed
a ‘digital deposit model’ using information acquired from
the 1970s excavations. This model plots in three dimensions, all walls,
moats and other features known to exist under the ground, so their location
can now be viewed at the touch of a button.
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