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The
original course of the Wye in this area was along the much
wider valley which is now the course of the Yazor/Eign Brook,
at some distance to the north. During the later glaciation
the Wye is presumed to have formed a new course, originally
flowing on the ice. As this melted, the river cut down
through the Raglan Mudstone formations of the Old Red Sandstone
to form the narrow Breinton Gorge.
The
Cage Brook, incised back from the deepening Wye at this time,
cutting through the Raglan formations south of the river.
Both valleys, that of the Wye and that of the Cage, have subsequently
been subjected to alluviation.
The Cage runs along the north-western side of its valley just
above Tuck Mill. The mill-race was constructed along
the south-eastern side of this narrow valley.
The Cage Brook forms the boundary between the parishes of
Clehonger to the east and Eaton Bishop to the west.
Tuck
Mill, in Clehonger parish, is the last of four water-mills
which in the 19th century stood on the Cage Brook
along this Boundary. The other three were New Mill (Eaton
Bishop – 34402 23754), Cagebrook Mill (Clehonger –
34463 23785) and Ruckhall Mill (Eaton Bishop – 34521
23893). |