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Thanks simon and d.. by padodes   (Show all posts)
Conditions, padode.. by dhmiriam   (Show all posts)
Ten years ago a ma.. by Bleck Cra   (Show all posts)
Simon helpfully ma.. by eflanaga   (Show all posts)
I'm not so sure th.. by simon3   (Show all posts)
Why are there so f.. by padodes   (Show all posts)
2007-11-09 10:36:05
OS on the wireless
I had a listen to this. The format is .smil which required me to download the free Real player - tedious but perfectly feasible.

The production included a review of OS mapping from the formation of the state in 1922. For hillwalkers there is some interesting background such as about the erection of the trig pillars (mostly in the 1960s) and the re-mapping to use the national grid in the 1970s. And of course there were funny stories such as the one about the surveyor that bought a ball of wall and used it likeTheseus escaping the Minotaur to find his way back. Only the wool had been broken and he got lost, which around Cuilcagh could mean a longish tramp on a huge bog with dangerous sinkholes.

There was some mention of the half-inch series which were the maps that were all that were available until the 90's Really they were very hard to use and had some infamous errors in the contours such the one near Binn Chaonaigh in the Turks.

The 1:50,000 maps we now use are really much better, in particular in the contours. They stand well for readability in comparison with maps such as I have used in France and in Spain, though of course the layer tinting used here works much better in a territory such as Ireland where the maximum height is only around 1000m.

The OSI 1:50k maps are made by aerial survey which is responsible for the better contours. On the other hand, given that there is little surveying in person, there are different forms of error - too many in my opinion - such as errors of detail in river courses and errors about tracks through forests.

Still I wouldn't swap my 1:50k or Trailmaster maps for the half-inch. I rarely use the half-inch at all now though sometimes it is a convenient scale for driving with an eye to the landscape.

Thanks Moac for pointing out something well worth listening to.
Well put dhmiriam... by Alex92   (Show all posts)
'Craw 'said the cr.. by maclimb   (Show all posts)
Oh for pity’s sake.. by Bleck Cra   (Show all posts)

RECENT CONTRIBUTIONS 1 2 3 .. 14 Next page >>
Summit Comment
Torc Mountain W Top: Big brother ....
hivisibility a day ago.
Here's a picture of Torc itself from Torc West Top. Approx 600m between the two summits.

Summit Comment
Barnahowna: Fine-weather photo
bryanmccabe 2 days ago.
Thought a fine-weather photo of Barnahowna summit was needed!

Summit Summary
Maumtrasna North-East Top: Worth a visit!
Collaborative entry Last edit by: bryanmccabe 2 days ago.
Maumtrasna NE top, approximately 2km NE of Maumtrasna, is worth a visit in its own right. The most direct access is via the steep ridge up to nearby spot height 542. One possible starting point is...

Ott Mountain to Slieve Meelmore
Aidy 3 days ago.
Started at the Ott/Blue Quarry car park on the Moyad Road, and took a route taking in six summits, going over Ott Mou... walk, Len: 10.9km, Climb: 730m, Area: Ott Mountain, Mourne Mountains (Ireland)

Summit Comment
Crossderry: Summit No 2 of a fine ridge walk.
hivisibility 2 days ago.
Here is another view of Crossderry taken from Mothillín. You can see the twin peaks at the summit area. The summit proper is the one on the right. Knocknabreeda in the background.Its pretty rugged...

Glenbeigh to Galway's Bridge
GSheehy 3 days ago.
I?m putting this one up because it was a club walk and I was thinking about the other day. There aren?t too many clu walk, Len: 40.5km, Climb: 917m, Area: Glenbeigh Horseshoe (Ireland)

Summit Comment
Mothaillín: Fabulous views to the west from the summit.
hivisibility 3 days ago.
Fine view towards Broghnabinnia and Caher from Mothillín summit.

Summit Comment
Mothaillín: Summit area as seen from Crossderry.
hivisibility 3 days ago.
Mothillín summit from Crossderry.

Peak bagging in The Sperrins in autumn
peter1 4 days ago.
Again, the use of a mountain bike is highly recommended for this route, if you are a solo walker. I left my bike in a... walk, Len: 16.2km, Climb: 1048m, Area: Mullaghclogha, Sperrin Mountains (Irela

Forum: General
Cable Car to the Hellfire Club - 20/10
cave-dweller 5 days ago.
Hello, There is a meeting being held in the Yellow House Pub in Rathfarnham in Dublin 14 tomorrow night at 8 pm about some proposed "redevelopments" in and around the Hellfire Club/Montpelier Hill...

Summit Comment
Crossderry: Towards Knocknabreeda and Stumoa Dúloigh
hivisibility 3 days ago.
The view towards Knocknabreeda fro Crossderry summit. Stumpa Dúloigh in the background. Knocknabreeda summit is located over to the far left of the ridge.

Slieve Foye
Onzy a week ago.
Sunday route over Slieve Foye and along the ridge for a bit... walk, Len: 9.9km, Climb: 439m, Area: Slieve Foye, Cooley/Gullion (Ireland) Slie...

RECENT CONTRIBUTIONS 1 2 3 .. 14 Next page >>