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The public road up the valley is effectively a cul-de-sac though numerous footpaths and bridleways climb up the sides of the valley from it. However, a vehicular impassable
Restricted Byway (Road used as Public Path) connects to an equally difficult in law Right of way at the end of the valley,
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61:. The valley is notable for being at the centre of a major green energy initiative known as The Three Green Valleys project and which involves the construction of several
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Ordnance Survey
Explorer maps OL12 & OL13 'Brecon Beacons National Park: western area & eastern area'
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50:
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British
Geological Survey 1:50,000 map sheet 232 'Abergavenny' & accompanying memoir
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schemes. Dyffryn
Crawnon is translated from Welsh to mean "Valley of the Garlic River".
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The river flows through a valley carved into the mudstones and sandstones of the
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suspected to be the original line of the
Brinore Tramroad. The
94:skirts the northern edge of Dyffryn Crawnon.
8:
45:. The headwaters rise on the hills north of
178:Rivers of the Brecon Beacons National Park
49:and flow northeast down a valley known as
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53:for 7 km to a confluence with the
7:
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1:
35:Brecon Beacons National Park
25:Footbridge over Afon Crawnon
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26:
77:laid down during the
24:
16:River in Powys, Wales
144:51.86889°N 3.24417°W
140: /
149:51.86889; -3.24417
33:is a river in the
27:
75:Old Red Sandstone
37:in the county of
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173:Rivers of Powys
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79:Devonian period
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51:Dyffryn Crawnon
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168:Brecon Beacons
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57:just west of
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31:Afon Crawnon
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147: /
92:Beacons Way
63:micro-hydro
162:Categories
132:51°52′08″N
98:References
59:Llangynidr
135:3°14′39″W
55:River Usk
69:Geology
85:Access
47:Trefil
43:Wales
39:Powys
29:The
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81:.
41:,
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