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A Hump (Hundred and upwards Metre Prominence) is any mountain in Britain or Ireland with a prominence over 100m, regardless of height.
A Simm is any mountain in Britain or Ireland with a prominence over 30m and a height above 600m.
A Munro is any Scottish mountain with a height above 3000ft.
A Murdo is a mountain in Scotland with a height greater then 3000ft and a prominence greater then 30m.
A Submarilyn is a peak in Britain which doesn't meet the criteria of a Marilyn but has a prominence within 10m of it.
