Showing posts with label Castell Cricieth. Show all posts
Showing posts with label Castell Cricieth. Show all posts

Tuesday, 7 March 2017

Mapping Mountains – Hill Reclassifications – Y Trechol – The Dominant Hills of Wales



Castell Cricieth (SH 500 377) - Dominant addition

There has been an addition to the listing of Y Trechol – The Dominant Hills of Wales due to detail included on the Ordnance Survey enlarged mapping hosted on the Geograph website and which was first spotted by Alex Cameron.  This has resulted in the hill being added to the Dominant list.  With the criteria for inclusion to this list being those Welsh P30 hills whose prominence equal or exceed half that of their absolute height.

The details relating to this hill’s inclusion as a Dominant hill are retrospective as it was added to the list shortly after Alex first proposed it as a new P30 in September 2014, and later appeared in the Moel Hebog group of hills when published on Mapping Mountains on the 28th January 2016.

Prior to Alex Cameron proposing this hill as a new P30 and its subsequent inclusion as a Dominant hill it had remained unclassified, as the Ordnance Survey 1:50,000 Landranger map and 1:25,000 Explorer map has an uppermost contour of 30m and bwlch contouring between 10m – 20m, which implied that this hill did not have the required 30m of drop to be considered for Dominant status.

The hill is in the Moel Hebog group of hills and is placed in the Region of North Wales (Region A, Sub-Region A1) and is situated in the heartland of the town of Cricieth overlooking the sea, which is to its immediate east and south.

The name of the hill is taken from the castle at its top; Castell Cricieth,  and there is an admittance fee for those wishing to visit, it was included as a Dominant hill as the Ordnance Survey enlarged map hosted on the Geograph website has contours at 5m intervals giving the hill an uppermost contour of 45m and a summit spot height of 48m, with bwlch contouring between 15m – 20m, with an estimated bwlch of c 18m, giving the hill an estimated drop of c 30m and 62.5% Dominance.  The hill has subsequently been surveyed with the Trimble GeoXH 6000 with a summit height of 49.6m (converted to OSGM15) and a bwlch height of 19.3m (converted to OSGM15), with these values giving the hill 30.3m of drop and 61.02% Dominance.


The full details for the hill are:

Group:  Moel Hebog

Name:  Castell Cricieth

Dominance:  61.02%

OS 1:50,000 map:  123

Summit Grid Reference:  SH 50003 37733

Summit Height:  49.6m (converted to OSGM15)

Drop Summit to Bwlch:  30.3m

Drop Bwlch to ODN:  19.3m (converted to OSGM15) 


Castell Cricieth (SH 500 377) confirmed as a Dominant hill


Myrddyn Phillips (March 2017)





Sunday, 28 June 2015

Mapping Mountains – Hill Reclassifications – 30m–99m Twmpau


Castell Cricieth (SH 500 377) - 30-99m Twmpau addition  

There has been an addition to the listing of Twmpau (thirty welsh metre prominences and upward) hills due in part to a recent survey with the Trimble GeoXH 6000.  The hill is listed in the 30m-99m height band of Twmpau hills and is situated in the town of Cricieth.

Its P30 status was first discovered by Alex Cameron who rightly judged that with a 48m summit spot height which appears on the Ordnance Survey enlarged mapping hosted on the Geograph website, and with bwlch contouring between c 15m – c 20m, with an estimated bwlch height of c 18m, this hill should be listed as a P30 with c 30m of drop.

The hill is Castell Cricieth which as its name implies has a castle on top of it.

This hill is one of the rarities that have not appeared in previous Sub-Lists before its entrance as a fully-fledged P30.


The full details for the hill are:

Cardinal Hill:  Moel Hebog

Summit Height:  49.6m (converted to OSGM15)

Name:  Castell Cricieth

OS 1:50,000 map:  123

Summit Grid Reference:  SH 500 377

Drop:  30.3m (converted to OSGM15)


Castell Cricieth (SH 500 377) P30 status now confirmed by the Trimble GeoXH 6000

For details on the survey that confirmed this hill's status as a 30-99m Twmpau please click {here}


Myrddyn Phillips (June 2015)





Saturday, 27 June 2015

Mapping Mountains – Trimble Surveys – Moel Hebog


15.06.15  Castell Cricieth (SH 500 377)  

Castell Cricieth (SH 500 377)

Having surveyed Carreg yr Eryr (SH 526 378) and Moel y Gadair (SH 521 391) earlier in the day I wanted to investigate the recently elevated P30 status of Castell Cricieth.  Its P30 status was first spotted by Alex Cameron who rightly judged that with a 48m spot height appearing on the Ordnance Survey enlarged Geograph map and with bwlch contouring between c 15m – c 20m with interpolation indicating a bwlch height of c 18m, the hill that the castle sits on top of has an estimated c 30m of drop.

Having previously surveyed the heights of Castell Dinbych and Castell Caernarfon I contacted Cadw beforehand and their representative kindly permitted me to visit and survey the hill.

I parked close to the centre of Cricieth in one of the housing estates adjacent to the main street; my first objective was the bwlch which map inspection indicated to be on the town’s recreational grounds.  As I locked my car I found the area of the bwlch to have a pitch and put on it as well as a bowling green.  Thankfully the bowling green was visually lower, otherwise play for the day would have to be suspended whilst Trimbling took place.

Once on the pitch and put I assessed the lay of the land close to the 6th fairway, rather disconcertedly there was a pitcher and putter making his way around the course and by the time I kneeled on the ground and put my chin on the grass to assess the contouring of the land, my actions had come to the attention of the bowling green assistant who I suspected would also be the person in charge of the pitch and put.  I thought this would happen and I came prepared with one of my best and friendliest smiles and explanations, he was understanding to the needs of surveying and thankfully said that it was all right for me to continue ‘as long as you don’t get hit by a golf ball’, as the pitcher and putter seemed inclined to hook many of his shots this latter piece of advice was taken on board and seemed appropriate.

The fairway on each hole consisted of closely cropped grass with the ‘rough’ between being surveyable.  This was proving great fun as I had never surveyed a pitch and put course before! 

I collected data from two initial points, one on the fairway of the 6th and one in the rough between the 2nd and the 5th holes.  As the Trimble was doing its stuff I helped the pitch and putter find his wayward shot as the ball was immersed a centimetre deep in the thick rough.  I also looked up at the castle which looked rather grand perched on its hill top.

Gathering data on the 6th fairway
Gathering data in the rough between the 2nd and 5th fairways

As I packed the Trimble away I left the recreational grounds and walked through the housing estate, noting on the way that ground beside a bench next to the road looked as if it could be a teense higher, therefore if time permitted I would survey a third potential position for this hill’s critical bwlch once the castle had been surveyed.

Castell Cricieth was first constructed in the 1230’s by Llywelyn the Great and later heavily modified by the forces of Edward 1 in the late 1200’s.  It has a turbulent history with it being besieged by the Welsh in 1294 / 1295 and later re-taken by the Welsh during the years of uprising led by Owain Glyndŵr.  During the recapture of the castle it had many of its walls torn down and was set alight.  The vestiges of what survives are on show today.

Approaching the castle two proud Red Dragon’s fly above the remaining towers and the path onward leads the members of the public into the lower modern castle entrance, this is where the admittance fee is paid, I had been granted free admittance and signed their VIP book after I introduced myself to Sylvia Jones, who was expecting me.  My thanks are given to Cadw for letting me survey the castle and for giving me free admittance, this is greatly appreciated, diolch yn fawr iawn.

Approaching Castell Cricieth
As I walked up the path toward the top of the hill and the remains of the castle I looked back toward the area of the bwlch, which if not for the recreational grounds would no doubt have houses built on it, so pitch and putts can be a very helpful tool when surveying.

Thankfully the recreational grounds where the pitch and putt is situated exist, otherwise this area would no doubt have houses built on it and therefore surveying would be compromised

The castle is dramatically positioned overlooking Tremadog Bay and the sea with all but its landlocked entrance being hard to reach.  I investigated its outer southern grounds before venturing into its remains.  The highest point inside the castle was not hard to find as it was on grass under one of the walls.  I considered putting the Trimble on this point, but decided to investigate the other parts of the castle before doing so.

I exited the main entrance and walked around the eastern side which overlooks the sea, on this side of the wall were small rocky outcrops, I followed these upto their highest point, which proved to be directly on the opposite side of the exterior wall to the high point within the walls.

As the Trimble gathered data from the high point outside the walls I stood and chatted to a number of people as they passed, including a romancing couple who I apologised to as they swept each other up in their arms and I sheepishly approached trying to explain what I was about to do, thankfully they seemed interested and asked a number of questions, others were out with their dogs and guide books examining the various towers and reading about the history of the castle as they did so.

The highest rock outcrop outside the walls is diagonally opposite the high point inside the walls
Gathering data at the high point outside the walls

Once five minutes of data were gathered I headed back inside the walls and set the Trimble up on the high point inside the castle.  As it slowly ebbed down to its 0.1m accuracy level before data can be logged, I had a brief look at the exterior walls to see if they hid any natural rock outcrop in them, I could not find any so happy with my placement of the Trimble I continued to wait.

The Trimble was sitting in a bowl of walls and took a long time to reach its prescribed accuracy level, during this I chatted to Rachel who was out with her niece, they had been to Dylan’s on the seafront of the town for lunch, this is where I had a 7.15pm appointment to meet my brother and Al, Frances, Laura and Sam to celebrate Alun’s 60th birthday.  Rachel highly recommended Dylan’s and it looked inviting from outside as I passed it earlier in the day.  We chatted for quite some time, when they left I looked at the Trimble’s screen and it was still on 0.11m, I left it another couple of minutes and the 0.1m accuracy was attained, I pressed ‘Log’ and scampered off to wait for five minutes as it collected its data.

Gathering data at the high point inside the walls

Leaving the castle I thanked Sylvia and walked back down the road toward my car and the area of this hill’s bwlch.  I looked at the continuing downhill on the valley to valley traverse which went through a locked and closed off gate, I then chose my spot and placed the Trimble down on a patch of grass beside a bench and waited and waited and waited.  I was in no rush and spoke to a few people as they passed, one explained that the gate had once given access down a public footpath but had been closed off as someone had died there after having lying at the back of houses overnight, I also encountered three lost French tourists who were looking for their car, this was parked next to the sea and they were walking toward me which was heading inland, I tried my stumbling French (non-existent) and pointed them back toward the sea.

The last data set of the day at the critical bwlch of Castell Cricieth

Aha, bril, 0.1m, press ‘Log’ and quickly scamper off, five minutes later I switched the Trimble off, packed it away and sauntered back to my car to get my boots off.  A few minutes later I was parked above the town in a lay-by and changed from my walking gear into my smart let’s get a lot of nosh in my tummy gear.  I even had time to relax in the early evening sun and have a read for 45 minutes.  Next stop Dylan’s and Alun’s 60th.


Alun, Laura, Sam and Frances outside Dylan's

Survey Result:


Castell Cricieth

Summit Height:  49.6m (converted to OSGM15)

Summit Grid Reference:  SH 50003 37733

Bwlch Height:  19.3m (converted to OSGM15)

Bwlch Grid Reference:  SH 49943 38015



For further details please consult the Trimble survey spreadsheet click {here}