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:Arderin [Ard Eireann]
Hill number:20258
Height:527m / 1729ft
RHB Section:56B: Slieve Bloom Mountains
County/UA:Laois, Offaly
County (CoH):Laois (CoH), Offaly (CoH)
Hill area:Slieve Bloom
Class:Marilyn, Hump, Historic County Top, Current County/UA Top, Arderin,
Myrddyn Dewey
Grid ref:S 23247 98905
Summit feature:no feature 15m ENE of OS marker
Col:107m  S180880  
OS map sheet(s):(1:50k) 54
Observations:ground is 20cm higher than OS marker and cairn base (this lower position might be the Offaly HP)
Survey:Abney level
Change log:show changes for this hill entry
GPS data:show GPS entries for this hill
  • Laois historic county top
  • Offaly historic county top
  • Laois current county/UA top
  • Offaly current county/UA top

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

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 25 users)ByDate of Ascent
With GB from the car park at Glendine Gap. An easy 35 minute return in dry conditions underfoot.bolton10/09/2014
Car park at Glendine Gap (S23047 99609) - Dropped down into boggy area and then ascended well-worn path to the unmarked high point of Laois & the OS marker & cairn base, marking the historic county top of Offaly. (PM)gerrybowes10/09/2014
PMG WALK 22 -The Slieve Bloom Mountainssimoburn29/04/2014
Rapid ascent on path from the road pass 750m south.jimbloomer20/09/2011
The path was more like a stream, very boggy. First snow of the season too!Roen13/11/2010
Short walk up from big road nice enough but not best topnickywood128/04/2010
Started from Glendine carpark. Walked road to the Laois/offaly sign, and up via a well worn path. Found the OS marker. Fab views. came down by the woods and in a stream bed. Brill!!Audi-Anne04/08/2008
dull heathery summit (in lashing rain). boggy path thru trees from pass to N RHW30/04/2005
Nomad Perkins20/02/2015
Harry Goodman11/07/2008
Lindsay M12/11/2006
Janet M12/11/2006
Rod M12/11/2006
David Purchase05/09/2003