Add marker to map:              help
Marker Notes X

To add your own marker to the map, click on the appropriate symbol below the map, then click again at the location required on the map (using the crosshairs).

Logged-in registered users only...
When you add a marker, a pop-up box should then appear on the map - fill in the elevation (if known) and a brief description of your marker, then click [save].

To view previously saved markers which fall within the bounds of the map, click the show link (you may need to repeat this if you zoom or pan away from the current position on the map).

Name:Pen Cwm Silyn
Hill number:14422
Height:422m / 1384ft
Parent (Ma):1999  Craig Cwm Silyn
RHB Section:30B: Snowdonia
Nuttall/Wainwright area:Moel Hebog
County/UA:Gwynedd (CoU)
Class:Tump (400-499m)
Grid ref:SH518511 (est)
Col:386m  SH517507  
OS map sheet(s):(1:50k) 115
(1:25k) OL17W 254
Change log:show changes for this hill entry
GPS data:show GPS entries for this hill

Show Map
(Please be considerate with your usage of the OS map pages, as there are daily limits)

View on: Geograph  OS Maps  Streetmap  Magic  NLS  OSM

Full screen map
Switch to Bing Maps view
(Please be considerate with your usage of the Full Screen/Bing Maps pages, as there are monthly limits)

Resize map: portrait / landscape / reset

Map Help, This page uses the Ordnance Survey OpenSpace API
which does not include Explorer (1:25000 scale) mapping.

Show/hide GPS File for mountains/markers shown

Show/hide GPX File for mountains shown

No summit photo available
Hill summit
No portrait photo available
Hill portrait

To contribute a summit or portrait photo for a hill
please contact the hillsummits website

N.B. Some hill summits are on private property or on land where there is no public right of way.  Permission should be sought from the landowner where access to a hill summit is through private land.
Please report via the contact page any logs you see below which describe or encourage acts of trespass, and mention the hill number and hill name.

Logged Descriptions  (logged by 21 users)ByDate of Ascent
Part of Nantlle Ridge walk with SNpdhancock17/11/2018
Track from road end to west - parking permitted -and then slog up heathery, bouldery slopes. Crossing stream at northern outfall is best route up - which I didn't use.chriswatson09/07/2018
Fi Darryl ac Alfie ar ol Craig Cwm Silyn.jrj06/10/2017
From Craig Cwm Silyn, with dadJamesD197206/10/2017
8/8 (Y Garn/Mynydd Drws-y-Coed/Trum y Ddysgl/Mynydd Tal-y Mignedd/Craig Cwm Silyn/Garnedd-Goch/Mynydd Graig Goch/Pen Cwm Silyn)Fergalh29/07/2017
Waunfawr to Penygroes. Summit terrain very slow going and my approach from Talysarn via mapped ROWs & Access Land was awkward & laborious until hitting the main path to Cwm Silyn.Smudge26/11/2016
SH51781 51160Anton16/07/2013
heather; large boulder at summit. from W, track from road end RHW28/05/2007
o gwmpaswillias31/05/1993
arbitrary date i know that this summit has been visited sometime during that period of time.thenomad01/01/1988
andrew brown08/06/2019
Alex C22/11/2014
Ron Rees Davies01/09/2014
carole engel14/09/2013