Analysis of information sources in references of the Wikipedia article "Lists of mountains in Ireland" in English language version.
Of the 282, 200 are said to have a summit prominence of over 150 metres and are therefore known as "real monros", but that's for another day.
A Guide to Ireland's Mountain Summits has been produced by the team behind the MountainView, a not–for–profit group that has run a popular website for more than 10 years
The Myrddyn Deweys are hills in Ireland with a height between 500-609m and prominence of 30m. The list was researched by Michael Dewey and Myrddyn Phillips and was made freely available to the Mountaineering Council of Ireland in 2000. In 2011 the data was re-examined against the latest mapping. [...] There are 200 Myrddyn Deweys.
Dillons: Hills in Ireland at least 2,000 feet high published in The Mountains of Ireland. There is no prominence criterion. 15 Dillons are not Hewitts; 14 have drop <30m, while 20213 Corcog has a 609m spot height (the old 1:10560 map shows 2012ft which converts to 610.6m on the new datum). 12 Hewitts are not Dillons.
And that brings us to today, when Independent.ie talks to the 35-year-old. He's just completed the Vandeleur-Lynam – the name given to the group of 273 Irish mountains over 600 metres. [...] Forrest began his adventure on Thursday, August 9, and reached his final summit – Knocknadobar in county Kerry – on Wednesday, October 3.
I explained how these five ridge tops couldn't possibly be classified as 8000m peaks in their own right because each of them requires less than 135 metres of re-ascent between their respective parent peaks, Kangchenjunga and Lhotse (known as topographic prominence). It seems that where logic and common sense fail the NMA feels that flattery may work instead.
The "Hundred Highest" list includes summits with a prominence at a minimum of 100 m, and has been introduced to give a height based list, not too long, with a spread of locations for Ireland.
Listing selection: All summits (531) in list Arderins + Arderin Begs
DoBIH was founded by Graham Jackson and Chris Crocker as a personal tool to help them log their own hill ascents. However, over the years DoBIH evolved into something much bigger with six editors and many hillwalkers supplying data.
We've compiled a list of the 10 highest mountains in Ireland for you to get your teeth into.
Top 50 highest peaks in Ireland: MountainViews.ie
The Tipperary woman took 50 days, 5 hours, and 45 minutes to complete the list, beating the previous record by 6 days.
Previously available lists used a cutoff of 2,000 feet (609.6 meters). The 2000 foot cutoff would result in a total of 111 mountains: 90 for Great Britain, 1 for the Isle of Man, and 20 for Ireland. By lowering the cutoff to 600 meters (in order to be consistent with upcoming lists for Europe), we now reach a total of 119 mountains, including 93 for Great Britain, 1 on Man, and 25 in Ireland.
The UK and Ireland are a family of islands, so the issue of plateau areas does not arise. The authors have concluded that good criteria for the UK are a minimum height of 500 metres and prominence of 100 metres. This is the basis for the UK Prominent Peaks database.
Of the 282, 200 are said to have a summit prominence of over 150 metres and are therefore known as "real monros", but that's for another day.
Topographic criterium: for each summit, the level difference between it and the highest adjacent pass or notch should be at least 30 m (calculated as average of the summits at the limit of acceptability).
The Myrddyn Deweys are hills in Ireland with a height between 500-609m and prominence of 30m. The list was researched by Michael Dewey and Myrddyn Phillips and was made freely available to the Mountaineering Council of Ireland in 2000. In 2011 the data was re-examined against the latest mapping. [...] There are 200 Myrddyn Deweys.
