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Details of Blaen Onneu

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Blaen OnneuNo. 7657
Height:541.0m / 1775ft
Prominence/Drop:28.0m / 92ft
Country:Wales
County:Powys (CoU)
Grid Ref:SO 14702 15938
Latitude:51.830000
Longitude:-3.230000
Hill Area(s):32A: Llandovery to Monmouth
Classification:s5
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More Details for Blaen Onneu
Parent Hill:Cefn yr Ystrad
Summit feature:rock 3m NW of trig point
Col:513.0m / 1683ft (Grid ref: SO141151)
Map:OS Landranger: 161
OS Explorer: OL13S
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Height Purple icon for hills greater than or equal to 1200m high≥1200m
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Dark green icon for hills between 800m & 900m high≥800m
Green icon for hills between 700m & 800m high≥700m
Indigo icon for hills between 600m & 700m high≥600m
Violet icon for hills between 500m & 600m high≥500m
Dark violet icon for hills less than 500m high<500m
Prominence Icon for hills greater than or equal to 600m prominence (The definition of a P600 or 'major').≥600m
Icon for hills greater than or equal to 150m prominence (The definition of a Marilyn)≥150m
Icon for hills greater than or equal to 100m prominence (The definition of a Hump)≥100m
Icon for hills greater than or equal to 30m prominence (Definition for several hills, primarily Tumps)≥30m
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