
Ruined Episcopal chapel from 18th century south of the
Portlethen Moss along the Causey Mounth
The 'Causey Mounth' is an ancient
drovers' road over the coastal fringe of the
Grampian Mountains in
Aberdeenshire,
Scotland. This route was developed as the main highway between
Stonehaven and
Aberdeen around the 12th century
AD and it continued to function as the principal route connecting these two cities until the mid 20th century, when modern highway construction of the
A90 road occurred in this area. There are extant paved and usable sections of this road over part of the alignment; however, many parts of the ancient route are no more than footpaths, and in some cases the road has vanished into agricultural fields. Constructed in the
Middle Ages, the Causey Mounth was created as an elevated rock causeway to span many of the boggy areas such as the
Portlethen Moss. A considerable portion of the alignment of the Causey Mounth is illustrated on the UK
Ordnance Survey Map.
[1] although a large fraction of the route cannot be navigated by a conventional passenger vehicle (particularly at the crossing of the
Burn of Pheppie).
History
As late as the
Early Middle Ages, the
Mounth, or easternmost range of the
Grampian Mountains, posed a formidable terrestrial barrier isolating the northeast of Scotland from the Scottish Lowlands. This
mountainous barrier, combined with the local
bogs, may have been a factor in re-routing the Romans' coastal march northward, since the farthest known major
coastal
Roman encampment (
Raedykes) in the east of Scotland, lies literally at the southern
latitude of the Causey Mounth. By the twelfth century AD construction of the Causey Mounth had begun to connect these two regions of Highlands and Lowlands.
Detailed alignment
The route was specifically designed to connect the coastal portion of Stonehaven to a crossing of the
River Dee at the southern edge of Aberdeen. Stonehaven was most noted in the Middle Ages for the
fortress of
Dunnottar Castle, controlling land and sea movements of
military might from its rugged
promontory jutting into the North Sea. This fortress along with
Cowie Castle at the north of Stonehaven effectively controlled all coastal land and sea movements to the north. Proceeding north from Cowie Castle, the Causey Mounth crossed the
Burn of Muchalls at the
Bridge of Muchalls and thence proceeded norhward past
Muchalls Castle. The route passes the ruins of the Episcopal Chapels situated on lands of the Muchalls Castle Estate, and thence northerly beside the present day
Saint Tiernan's Church, which is the successor facility to the ruined chapels.
Further north the route passes near
Saint Ternan's Church. Thence the alignment crosses the
Burn of Pheppie in an agricultural area and further crosses a bridge over the
Burn of Elsick somewhat southeast of
Elsick House. After crossing through the boggy
Portlethen Moss (which had a much larger historic extent than present), the route passes west of a large megalithic
standing stone.
See also
★
Elsick House
★
Burn of Elsick
References
1. United Kingdom Ordinance Survey Map Landranger 45, Stonehaven and Banchory, 1:50,000 scale, 2004