Milestone on A470 near Dan-y-graig is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 16 June 2003. Milestone.

Milestone on A470 near Dan-y-graig

WRENN ID
plain-lime-quill
Grade
II
Local Planning Authority
Brecon Beacons National Park
Constituency
Merthyr Tydfil and Aberdare MP: Gerald Jones (Lab)
Country
Wales
Date first listed
16 June 2003
Type
Milestone
Address
Milestone on A470 near Dan-y-graig, Cwmtaf, Merthyr Tydfil, Vaynor
OS grid reference
SO 017 107
Coordinates
51.78703, -3.42605
Source
Cadw listing

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

Description

This is a milestone located on the A470 near Dan-y-graig. It is made of rough white-painted stone and features black lettering that reads "TO BRECON 15 Miles." There is a bench mark near the top on the right side, and the date 1867 is inscribed on the top.

Local climate

Milestone on A470 near Dan-y-graig sits in one of the wettest parts of the UK, with an average of 1,270 mm of rain a year. This makes it wetter than 94% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 85% of listed buildings.

It experiences an average of 54 freeze-thaw cycles a year, more than 94% of listed buildings. Of these, 30 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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  • Detailed attributes — period, style, materials, features
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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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