Black Mountain

About Black Mountain

Known in Welsh as Twyn Llech, 'hill of the stone', this summit within the Black Mountains has an unusual distinction: it is the only Marilyn to sit exactly on the Welsh–English border, with Powys on one side and Herefordshire on the other.

Its parent peak, Waun Fach, lies to the west. The hill counts as a county top on both historic and current reckonings.

Background written from facts in the Wikipedia article on Black Mountain (hill) (CC BY-SA 4.0). Heights, prominence and grid references come from the Database of British & Irish Hills, not from Wikipedia.

Access rights here

General position for Wales — local byelaws, seasonal restrictions and closures can override it. Full details: access rights in Wales · check another location.

Daylight at this summit today

Sunrise

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Sunset

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Daylight

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Civil twilight ends

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Computed astronomically for 52.012, -3.087. Plan your finish with the daylight safety planner.

Finding the summit

The recorded summit point is no feature 12m W of path. That distinction matters on broad or flat tops, where the obvious cairn is not always the true high point.

Survey method

KR 2x Hand Level/Trimble GeoXH 6000

Record revised

19-Mar-19

Drop measured from

SO235352 · 549 m

Classification history: Bridge and B&L summit lies 350m south near 703m spot. Herefordshire County Top is probably on the path 12m E of the northern summit or a few metres from the path at the southern summit.

Survey notes are field observations recorded in the Database of British & Irish Hills (v18.3, CC BY 4.0) by the hill-surveying community.

Long-distance paths past this hill

One waymarked long-distance route runs within 2.5 km of the summit — useful if you are linking this hill into a longer walk, or want a made path for the approach.

Route lines © OpenStreetMap contributors (ODbL); distance from the summit computed by OpenFell.

Nearest listed peaks