Friday, 15 February 2019

Mapping Mountains – Trimble Surveys – Carnedd Llywelyn


10.10.18  Coed Bodlondeb (SH 779 781)  

It was nearing the end of another bagging day but I wanted to visit two other hills before the sun sank and darkness fell, and the first of these two summits was Coed Bodlondeb, with its P30 status first noted by Mark Jackson in August 2015.

This hill is situated on the outskirts of Conwy and rises above the Conwy County Borough Council Offices and is wooded.  However, it has a number of paths leading toward its summit and I hoped to find one as I drove in to the County Council Offices car park and rather conveniently found the pay and display machine out of order.

I asked a passer-by if they knew where the start of a path leading up in to the wood was situated, and was kindly directed to stone steps leading in to the wood at the back of the large and grand building making up a part of the offices.

The steps lead the way

The wood is deciduous and proved beautiful to walk through with sunlight penetrating the canopy and autumn’s first colour change giving a semblance of variety.

The path through the wood

I soon arrived at the wooden bench which nestles beside the path and copious amounts of gorse that signify the top of this hill, with the high point beside one of the prickly gorse bushes I wondered how long it would take the Trimble to attain its 0.1m accuracy level before data should be logged.  Thankfully this was attained relatively quickly, and once the equipment was activated it beeped away gathering the allotted 600 datum points.

The Trimble set-up position at the summit of Coed Bodlondeb

During data collection I stood back on the continuation of the path as it headed north out of the wood.  Thankfully no one appeared as the Trimble gathered data and although the summit didn’t afford any view it was still a quiet and tranquil place to spend the late afternoon.

Gathering data at the summit of Coed Bodlondeb

Once data were gathered and stored and the Trimble switched off and packed away I retraced my inward route back to my awaiting car, and then drove toward my last hill of the day; Foel Gron (SH 583 621) which is situated above Deiniolen.

    

Survey Result:



Summit Height:  55.6m (converted to OSGM15)

Summit Grid Reference:  SH 77921 78114

Bwlch Height:  22.9m (LIDAR, natural bwlch) (with the A55 road cutting increasing the depth of the man-made bwlch to 12.0m)

Bwlch Grid Reference:  SH 77852 77725 (LIDAR, natural bwlch) (with the A55 man-made road cutting bwlch positioned at SH 77683 77840)

Drop:  32.6m (Trimble summit and LIDAR bwlch) (30-99m Twmpau addition)

Dominance:  58.70% (Trimble summit and LIDAR bwlch) (Dominant addition)







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