14.07.21 Pen y Gelli (SO 180 909)
Pen y Gelli (SO 180 909) |
The settled weather also meant warming conditions and as all seven of these hills were positioned above Kerry and Newtown and therefore relatively near to where I live, I could set off early in the morning and head back home before the heat of the day struck.
I was parked at the start of an overgrown track and walking up a narrow country lane 2 miles to the east of Kerry by 6.30am. Except for the occasional barking of a disturbed slumbering dog all was peaceful and quiet.
Prior to visiting these hills I had analysed each with available LIDAR. Building up contours for both summit and bwlch, all necessary information was written down, with the ten figure grid references produced by LIDAR leading me toward the high point of each hill with the aid of using the Trimble as a hand-held GPS unit.
LIDAR image of Pen y Gelli (SO 180 909) |
Even without the aid of LIDAR the summit of this hill would not be difficult to pinpoint and soon the Trimble was set up gathering data. During data collection I stood downhill of the equipment scribbling all necessary information in my surveying notebook and listened to the occasional sound of a passing car on the A489 road just below and to the south of the hill. Nothing else seemed to stir, it was peaceful and a good hill to start the day’s surveying and bagging on.
Gathering data at the summit of Pen y Gelli |
The Trimble GeoXH 6000 set-up position at the summit of Pen y Gelli |
Survey Result:
Pen y Gelli
Summit Height: 208.5m (converted to OSGM15, Trimble GeoXH
6000)
Summit Grid Reference: SO 18007 90939 (Trimble GeoXH 6000)
Bwlch Height: 175.4m (LIDAR)
Bwlch Grid Reference: SO 16961 91121 (LIDAR)
Drop: 33.1m (Trimble GeoXH 6000 summit and LIDAR
bwlch)
Dominance: 15.88% (Trimble GeoXH 6000 summit and LIDAR
bwlch)
For further details please consult the Trimble Survey Spreadsheet
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