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:Esgair Dderw
Hill number:18878
Height:462.7m / 1518ft
Parent (Ma):2205  Pen y Garn
RHB Section:31C: South-West Wales
County/UA:Powys (CoU)
Class:Tump (400-499m)
Grid ref:SN 94365 70018
Summit feature:no feature: moss
Col:431.5m  SN 9387 6995  
OS map sheet(s):(1:50k) 136 147
(1:25k) 200W
Observations:vegetated outcrop 115m SSW at SN 94342 69906 is 0.2m lower
Survey:Trimble GeoXH 6000
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.  Please quote the hill number and hill name.

Logged Descriptions  (logged by 26 users)ByDate of Ascent
From 415m brow. Esgair Perfedd then across to Esgair Dderw.clivevilla18/01/2020
A Fantastic February day.Rob Rees22/02/2019
A easy diversion from the ROW. A nearly 2m high standing stone is nearby. A pleasant hill.Alan Moore01/01/2019
Parked at the small layby by the falls. Storm Eleanor was making things hard going on the return. Monolith an interesting diversion.DanMaisieBex03/01/2018
8 miles, 1129ft, Maen-Serth Standing Stone walk.stephenbuda07/10/2017
garethr10 01/07/2017
Continuation of walk from Penrhiw-wen. Headed south to join the by-way, following it most of the way to the summit. To descend, headed NW to a small pool (not marked on the maps), and then steeply down to join the bridleway NE via Cwmcoch to the road. Solo.Man of Kernow112/03/2017
A little round (ACW) of Moelfryn, Penrhiw-wen and Esgair Dderw from SN 94477 70755.summitsup08/05/2016
Sixth of nine on sunny day (Drum Ddu/Y Gamriw/Y Foel/Esgair Penygarreg/Esgair Perfedd/Esgair Dderw/Penrihw-Wen/Lethyr Melyn/Gornoeth)Fergalh16/04/2016
With LynfaRob Pen y Garn02/01/2016
On a small round of hills. Parking on mountain road, by waterfall. Flatish hill with interesting monlith approx 60m W of HP.jonglew28/06/2015
From Elan Valley Mountain Road (SN 93262 69802) - Esgair Dderw - Penrhiw-wen - Esgair Perfedd - Esgair Penygarreg.david23020129/12/2014
As part of a circular walk of Esgair y Llwyn, Pen Lan-fawr, Cerrig Llwydion, Sychnentydd, Moelfryn, Penrhiw-wen, Esgair Dderw, Esgair Penygarreg and Esgair Perfedd. No difficulties in parking, access or navigation.JohnStoneham07/09/2014
From westRHW03/04/2011