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Coaxial field system and semaphore station at Signal House Point

A Scheduled Monument in Chivelstone, Devon

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Coordinates

Latitude: 50.2059 / 50°12'21"N

Longitude: -3.7246 / 3°43'28"W

OS Eastings: 277028.613759

OS Northings: 35411.267264

OS Grid: SX770354

Mapcode National: GBR QK.WGWB

Mapcode Global: FRA 382H.4S6

Entry Name: Coaxial field system and semaphore station at Signal House Point

Scheduled Date: 9 February 2001

Source: Historic England

Source ID: 1019324

English Heritage Legacy ID: 33762

County: Devon

Civil Parish: Chivelstone

Traditional County: Devon

Lieutenancy Area (Ceremonial County): Devon

Church of England Parish: Chivelstone St Silvester

Church of England Diocese: Exeter

Details

This monument includes the relict and best preserved part of a coaxial field
system, located on a steeply sloping cliff, facing west over the English
Channel. There are dramatic views for many miles along the coastline to the
west. The field system consists of a block of about ten parallel strips, each
subdivided with short boundaries at angles to the main divisions. The system
is a maximum of 450m long by up to 570m wide. However, due to the removal of
many boundaries and the fact that the eastern part of the system is still
partly in use, the scheduling is limited to the western coastal slope where
the boundaries survive best.
The field system forms a sub-rectangular block with lanes following its north
and east sides. The western edge of the system was defined by a stone bank
with earth infill, part of which still survives on the cliff edge at the north
west corner of the site. The strips are between 38m and 65m wide, but are
mostly about 48m wide. Their boundaries are of two designs. The earliest
consists of natural schist stone slabs, fixed upright to form a fence. In most
cases, no bank is present, but one of the subdivisions includes a heavy earth
bank, forming a lynchet. This contains upright slabs and has a stone revetment
wall on its downhill side. Most of these slab walls survive on the steep slope
which falls to the sea on the western edge of the monument. Occasional rock
outcrops are incorporated into these boundaries, which continue down to the
cliff edge. The later form of boundary is a wall of coursed stone. This can be
seen to abut and incorporate the upright slabs in several places. It varies in
design, some parts, especially on the coastal slope, being a stone bank with
an earth core. This commonly has a base up to 1m thick, tapering to about 0.5m
thick at a height of about 1m. Other parts, particularly inland of the coastal
slope, are up to 1.5m high and about 0.5m thick, of coursed drystone rubble.
Both wall types, but especially the former, are capped off with horizontal
pieces of stone, sloping in towards the centre of the wall.
On the highest part of Signal House Point, close to a rock outcrop, the ruins
of an Admiralty semaphore station constructed in 1773 lie within the field
system. It was one of a chain of stations linking the south coast ports with
the Naval dockyard at Devonport. A rectangular building 8.95m long by 6.55m
wide is aligned north to south and faces west. Of single storey with two
rooms, it is sited on a terrace dug into the hilltop. The walls of mortared
rubble are about 0.5m thick and survive up to 1m high. It had a roof of Welsh
slate. A semaphore tower to its north is 2m square with mortared walls 0.4m
thick, surviving up to 0.2m high.
All fence posts are excluded from the scheduling although the ground beneath
them is included.

MAP EXTRACT
The site of the monument is shown on the attached map extract.
It includes a 2 metre boundary around the archaeological features,
considered to be essential for the monument's support and preservation.

Source: Historic England

Reasons for Scheduling

Coaxial field systems are one of several methods of land division employed
during the Bronze Age; evidence from areas such as Dartmoor, where they are
relatively common, suggest their introduction around 1700 BC and their
continued use until 1000 BC. They generally consist of linear stones banks
forming parallel boundaries running up slope to meet similar boundaries that
run along the contours of higher slopes. The long strips formed by the
parallel boundaries may be subdivided by cross banks to form a series of
rectangular field plots, each sharing a common axis. Broadly contemporary
occupation sites, comprising hut circle settlements, and funerary and
ceremonial sites, may be found within these enclosed fields.
Coaxial field systems are representative of their period and an important
element in the existing landscape. Surviving examples are likely to be
considered of national importance.

Despite later reconstruction and partial demolition of its walls, the western
portion of the field system at Signal House Point is in good original
condition. The use of upright stone slabs forming fences is very unusual.
Signal stations using either beacons or semaphore arms on towers were
developed during the 18th century for passing messages quickly between cities,
government offices and military installations. The Army and Navy often build
their own signal stations and coastal locations were common, especially on
routes between ports.
Although ruined, the 18th century semaphore station on Signal House Point is a
rare survival.

Source: Historic England

Sources

Other
fieldwork by Mr Le Messurier, (1982)
MPP fieldwork by R Waterhouse, (1999)

Source: Historic England

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