Mullach Coire nan Cisteachan (NN663806) is positioned to the east of the A9 in the Drumochter hills. It has a 914m (2999ft) spot height on current Ordnance Survey maps, and as its map height is below 3000ft it has not been considered by the Scottish Mountaineering Club for Munro Top status. However, a previous survey by Alan Dawson found that this hill is just over 3000ft. Our aim was to gather a minimum of two hours of summit data and submit these data to Ordnance Survey. Would Mullach Coire nan Cisteachan prove to be over 3000ft in height and therefore be considered for Munro Top status?
Very interesting - I bet Sir Hugh would be amazed by all this GPS kit. However - your intro mentions "283 Munros" - are you sure? I thought there were now 282, after the demotion of Beinn a'Chlaidheimh? With 7 to go, I need to know!
No doubt this is why the survey was carried out - because somebody suspected these numbers to be wrong. If the survey has been carried out to the correct standard, then the OS will adopt the findings in the next revision of their maps. It won't be immediate though - it isn't OpenMaps.
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