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Post details Post   (Contract pics)
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)
simon3
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)
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RECENT CONTRIBUTIONS 1 2 3 .. 17 Next page >>
Track
Ballinagee Bridge to Hollywood (Western Half of St. Kevin's Way)
jgfitz 2 days ago.
This is the first half of St. Kevin's Way, but walked in reverse direction. This pilgrim route normally starts in Hollyw walk, Len: 14.9km, Climb: 195m, Area: Dublin/Wicklow (Ireland)

  
Summit Comment
Knocknafallia: Summit Found
CaminoPat 2 days ago.
Walked to Knocknafallia from Knockmeal on Sunday 18 February to location of stone cairn which includes a passage grave on the eastern side of Knocknafallia. The cairn is located at Irish Grid S 0...

  
Track
Lake District: Loughrigg Fell
Onzy 3 days ago.
Up and down to a solitary Wainwright above Ambleside. walk, Len: 5.0km, Climb: 278m, Area: Loughrigg Fell, Lake District - Central & ...

Track
Lake District: North Central Fells
Onzy 3 days ago.
Walk above Derwent Water taking in 5 Wainwright hills; Walla Crag (Not listed on MV), Bleaberry Fell, High Seat, High... walk, Len: 17.3km, Climb: 727m, Area: Bleaberry Fell, Lake District - Central

  
Summit Comment
Truskmore: Access update 18 Feb 2018 from carpark at IG78210 48924
ColinCallanan 3 days ago.
I had intended to summit Tievebaun and/or Truskmore, and had also hoped to check out "Eagles rock" using the car park as a start point at IG78210 48924, so I proceeded to park my car at this offic...

  
Track
Lake District: Above Troutbeck
Onzy 3 days ago.
Walk taking in 3 Wainwrights from Troutbeck, Sour Howes, Sallows and Troutbeck Tongue (not on this site). The extensi... walk, Len: 13.8km, Climb: 721m, Area: Sour Howes, Lake District - Eastern Fell

Forum: General
How's this for a mountainview?
mcrtchly 6 days ago.
The majesty of the otherworldly night sky over the iconic Vestrahorn massif in SE Iceland. The moon had just risen and illuminated the snow-crested mountains, whilst the Milky Way arched overhead ...

  
Summit Comment
Knockanaffrin South Top: Steep Ascent
peter1 3 days ago.
There is ample parking at the trailhead, where a number of circular walks start and finish. Approaching the Knockanaffrin ridge from the East, provides a number of options once Coumduala Lough is ...

  
Forum: General
Meelmore the concluding argument
BleckCra a week ago.
Ladies and Gentlemen of the Jury, the case of :-Meelmore, what the place name means in English.BleckCra -v- Ptempan.Summing up for the prosecution.The defendant avers and publishes that the Mounta...

Forum: General
Gleniff Horseshoe
Aidy 5 days ago.
Headed out last Sunday to climb Tievebaun, but the lightning put me off. Got some great views in the Gleniff Horseshoe as a consolation.

  
Track
An enjoyable route up to Tievebaun with stunning views into Donegal.
ColinCallanan 3 days ago.
This was a very enjayable walk. We started in the carpark which has an information board titled "Eagles rock". walk, Len: 6.6km, Climb: 448m, Area: Tievebaun, Dartry Mountains (Ireland) Ti

  
Summit Comment
Mount Kennedy: Find the wall going north to south (or vice versa) over the summi
Bunsen7 a week ago.
I had to laugh when I looked at the tracks on the site and compared it to my own from O2276 0476. If I were to upload it there would be three tracks all of which reached the summit but took an unn...


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