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Walton-on-the-Naze
9 April 2011
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Walton-on-the-Naze index |
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The damage to the Mabel
Greville breakwater, left, reported last trip shows up well, but,
surprisingly, the next concrete groyne to the north, right, has
suffered a similar fate. In the absence of storms, frost damage is still
a favourite cause. In the centre is the drying mud road from the construction
access to the Naze. |
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A falling beach to the
south of the new Crag Walk, indicated by blocks rotating forward (and
getting heavily encrusted with growths at the same time), left. On
the right the massive fall from one side of the groyne from the other,
indicating a south to the north movement of beach material. |
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The finished Crag Walk,
with a gravelled surface and large rocks either side to sit on; the old
beach access is still operational on the right-hand shot. |
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Between the granite
spit and the mobile flows of the crag cliffs, a trench exists. I
see this filing up with the push from above; hopefully it will
not overtop the walkway! |
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A couple of months
since my last visit shows further significant mass movement in
the eroding amphitheatre, such as the concrete slab, centre, and
the progress of mobile flows. |
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A fine touch is the
provision of generous quantities of information to inform the
viewer as to what they are observing. Clearly, field groups can
be set tasks from such sources! |
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Lots more lovely
information ... at high resolution! |
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The northern extent
of the granite spit is marked by heavy wooden steps and hand
rails. This should guarantee access to the beach at practically
all states of the tide, but it must be noted that the beach has
been lowered to the clay basement and little sand remains. |
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The end of the
pier! A good cross section of the crag can be obtained
looking back towards the Tower. |
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The Tower, granite
blocks and mobile flows - which will survive longest? |
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To the north of the
new coastal works, its business as usual, with mobile flows
spilling out over the beach. Here, the exceptionally dry Spring
has dried them out and they are crumbling, not flowing, to
eventual destruction. |
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A warning sign is
about to be undermined. |
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Drying clay blocks crumble and
fall down the slope, left, or slide off smooth shear planes of
clay, centre and right. |
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Some slumped material had
consolidated and allowed grass growth, before again sliding down
in the dry spell. |
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More crumbly clay
from, left and centre, slumping and mobile flows and, right, a
simple cliff fall. |
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On the right is the
exposure of plastic sheeting associated with the concrete-faced
embankment that is currently being torn up from seawards. |
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Coming back along
the cliff, walking south towards the Tower, the display of
slumping continues to impress. |
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More rotational
slumps, before the broken mass moves off seaward as a mobile
flow. |
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The new Crag Walk
is designed to be a protection for the Naze Tower, as well as
afford visitors and enhanced view of the erosion. |
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The volume of
material will, I feel, challenge the capabilities of the stone
walkway to hold it in place. |
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The current state of play
in the first embayment. |
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Walton-on-the-Naze
Crag Walk tourism viewing interpretation panels A-frame Breakwater Tower coasts cliffs
erosion beaches groynes clay sand defences mobile
slides rotational slumps wave cut platform |
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