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During recent prep.. by CaptainVertigo   (Show all posts)
I have been using .. by padodes   (Show all posts)
Jimmy Barry entere.. by simon3   (Show all posts)
Mick Farren entere.. by simon3   (Show all posts)
PURE (Protecting U.. by simon3   (Show all posts)
Like CaptainVertig.. by bejasus   (Show all posts)
It seems very quie.. by CaptainVertigo   (Show all posts)
simon3
2006-12-21 14:12:04
SMC contour maps
Parodes -- yes I would agree that the contour maps are a big advantage on a GPS. The contours are not particularly accurate. They come from "SRTM" data (Shuttle Radar Topography Mission) run by NASA some years ago. They only released 3 arcsecond data. This means for Ireland that they give height information at a spacing of around 56m by 90 metres. Much of the contour detail on the SMC system is therefore "interpolated" that is guesstimated.

MountainViews has a system that allows people to correct summit positions using GPS measurements. Over half the summits in our current list have at least one measurement and as time goes on this will improve. I take your point that what actually is the summit is not clear in some cases. Quite often there is no cairn or marking or there is a trig pillar but not quite at the summit.
I suppose it would be possible to come up with a system which identifies the exact point that is the summit. Would this really be worthwhile? It is possible incidentally that the SMC V2 map is not using the most uptodate positions for summits. Another GPS map we offer (from member Pazapas) uses a recent upload of data - the contours are 50m however.
It now appears tha.. by CaptainVertigo   (Show all posts)
Thanks to Mountain.. by padodes   (Show all posts)


RECENT CONTRIBUTIONS 1 2 3 .. 17 Next page >>
Summit Comment
Truskmore: ACCESS PROBLEM at CLOONTYPRUGHLISH IG788 476
eflanaga 7 hours ago.
Earlier today I accompanied a friend, who is completing the County Tops, to climb onto Truskmore. Having previously summited from the Glencar and Tievebaun sides I suggested we go up by Eagles Roc...

  
Forum: General
Irish hill runners and the Spine Race
IainT 10 hours ago.
The Spine Race is a 268 mile run up the Pennine Way in the north of England, run every January, invariably featuring snowdrifts, gales and many miles of sucking bog, much of it run in the dark. It...

  
Track
Cadair Idris Circuit
Onzy 11 hours ago.
Route over Cadair Idris with a number of extensions. This descent is far from intuitive, largely untracked and involv... walk, Len: 14.7km, Climb: 1086m, Area: Craig Lwyd, Dolgellau to Machynlleth (B

Summit Comment
Slieve Binnian: New developments
Mrswoodlands a day ago.
Climbed Binnion from the Carrick Little car park yesterday. We went up the Mourne wall as described by other contributers. While hugging the wall, as described, we noted a clear track not previous...

  
Summit Summary
Seefin Mountain E Top: Up the old bog road.
Collaborative entry Last edit by: melohara 4 days ago.
Car park space at R66276 16811. Over or around the gate and head uphill on a good track that crosses the hill near the summit.On the crest of the hill the summit cairn is over a wall to your right...

  
Track
Snowdon: Nantlle Ridge
Onzy 11 hours ago.
Nantlle Ridge route. Few blips in track - distance is about 20k, ascent 1,250 and time 7.30. walk, Len: 15.6km, Climb: 837m, Area: Y Garn, Snowdonia (Britain) Y Garn, Mynyd...

Summit Summary
Seefin Mountain W Top: Bog and rough ground.
Collaborative entry Last edit by: melohara 4 days ago.
Car park space at R66276 16811. Over or around the gate and head uphill on a good track that crosses the hill near the summit of Seefin Mountain East top.Follow the track on downhill from the cres...

  
Summit Summary
Seefin South-East Top: Seefin South East Top is easily visited
Collaborative entry Last edit by: melohara 4 days ago.
Seefin South East Top is easily visited from the track leading to Seefin Mountain East Top and Seefin Mountain West Top which starts st R66276 16811. Just follow the track to R65202 17892 from whe...

  
Track
Central Dingle Quartet from Anascaul
Bunsen7 2 days ago.
Follow the track from Anascaul lake car park northwards up onto the mountain plateau.Track leads northwards from lake... walk, Len: 15.8km, Climb: 949m, Area: Stradbally Mountain, Central Dingle (Ire

Summit Comment
Carnaween: The visitors book box near the summit
Aidy a week ago.
Just wanted to show the brilliantly constructed little box which contains the visitors book. It was too wet and windy on my visit to take it out and risk ruining it. A few shafts of light breaking...

  
Summit Comment
Carnaween: Bad Weather Adding Drama To Great Views
Aidy a week ago.
I used the commonly taken route from Disert Graveyard (worth a visit in its own right) over ground that was alternatively boggy or pretty steep. It was freezing cold in these parts, with a strong ...

  
Summit Comment
Corrin: A family stroll.
David-Guenot a week ago.
Climbed this hill in November 2014, with a friend who used to live in the area. Starting at the Coillte car park, we did a nice loop on the forest paths, circling around the hill in an anticlockwi...


RECENT CONTRIBUTIONS 1 2 3 .. 17 Next page >>