18.09.19
Bryn Trillyn (SH 947 590, only bwlch surveyed)
The connecting bwlch of
Bryn Trillyn is in utter contrast to its summit. The latter is heather bound with moor grass
and extensive views toward the higher Eryri hills, whilst its bwlch is in a
field next to the A543 road at it speeds its way from the outskirts of
Pentrefoelas toward Dinbych (Denbigh) in the north-east.
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| The summit of Bryn Trillyn (SH 947 590) |
I’d last visited its
summit along with Mark Trengove; watching the sunset from its high point as a
thin flash of yellowed light highlighted an otherwise deep and darkening blued
sky.
Weather and time of day
can dictate many aspects of hill walking, and especially for those related to
emotive state, and where the summit had been otherworldly with purpled heather
and stillness of the setting sun, my visit to the bwlch consisted of greened
fields and an occasional passing vehicle, with middays warmth leaving a
contented feeling, but one mainly based on a good job done, as I needed to
gather two sets of data, one from either side of the road where the hill to
hill traverse descended to a slightly raised strip of tarmac, leaving a low
point in each opposing field.
I’d examined the lay of
land of this bwlch via the digitised image in a Google car and found a
convenient parking place and realised before visiting that a point in the field
either side of the road would need surveying.
Therefore, as I left my car I had a quick look on both sides of the road
and decided that as the digitised image suggested; two data sets were required.
The Trimble was soon
set-up atop my rucksack gathering data on the eastern side of the road. Its placement was relatively easy to pinpoint
as a greened and grassed small and broad ridge descended to the boundary fence,
and once data were gathered and stored I closed the equipment down and headed
back to the road and the field on its other side.
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| Gathering data at the bwlch of Bryn Trillyn |
The point to survey on
the western side of the road was much tighter and in a dip close to the
boundary fence, and as the Trimble beeped away collecting its individual datum
points I happily stood back in the sunshine content that this third bwlch
survey of the day was nearing completion, but with another six planned I could
not linger.
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| Gathering data at the second option for the bwlch of Bryn Trillyn |
So, once the allotted
data were gathered and stored I packed the equipment away and headed back the
short distance to my car, checked the map and continued north-east toward the
bwlch of Moel Fechan.
Survey Result:
Bryn Trillyn
Summit Height: 496.4m (converted to OSGM15, from previous
Trimble GeoXH 6000 survey)
Summit Grid Reference: SH 94748 59094 (from previous Trimble GeoXH 6000 survey)
Bwlch Height: 446.5m (converted to OSGM15)
Bwlch Grid Reference: SH 96287 59668
Drop: 49.9m
Dominance: 10.05%
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