South-western aerial ropeway revetment, incline and associated buildings is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 21 July 2000. Aerial ropeway revetment.

South-western aerial ropeway revetment, incline and associated buildings

WRENN ID
standing-mullion-scarlet
Grade
II
Local Planning Authority
Gwynedd
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
21 July 2000
Type
Aerial ropeway revetment
Address
South-western aerial ropeway revetment, incline and associated buildings, Nantlle, Llanllyfni
OS grid reference
SH 498 531
Coordinates
53.05408, -4.24207
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The south-western aerial ropeway revetment, incline, and associated buildings is a large structure resembling a ziggurat, constructed from sawn slate blocks and oriented roughly north-south. The sides of the building are notably battered with distinct offsets, and there are remnants of slate-built structures on top. At the east end, there is a slate-built inclined plane that projects in a north-easterly direction.

Local climate

South-western aerial ropeway revetment, incline and associated buildings sits in one of the wettest parts of the UK, with an average of 1,380 mm of rain a year. This makes it wetter than 97% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 98% of listed buildings.

It experiences an average of 25 freeze-thaw cycles a year, fewer than 73% of listed buildings. Of these, 12 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

More on this building

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  • Radon risk assessment
  • Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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