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[[Image:Lammermuir Hills2.jpg|thumb|200px]]▼
[[Image:Lammermuirs.jpg|thumb|The Lammermuirs in the winter of 2009]]
The '''Lammermuirs''' are a range of hills in southern [[Scotland]], forming a natural boundary between [[East Lothian]] and the [[Scottish Borders|Borders]]. The name "Lammermuir" comes from the [[Old English]] ''lambra mōr'', meaning "moorland of the lambs".<ref>{{cite thesis |last=Williamson |first=May |date=1942 |title=The Non-Celtic Place-Names of the Scottish Border Counties |publisher=Edinburgh University |url=https://spns.org.uk/wp-content/uploads/2017/07/MayWilliamsonComplete.pdf |access-date=27 October 2022 |page=66}}</ref>
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The Lammermuir Hills are formed from a succession of [[Silurian]] and [[Ordovician]] age marine sediments known as [[greywacke]]s together with [[siltstone]]s, [[shale]]s and [[mudstone]]s. They are assigned to the [[Gala Group (geology)|Gala Group]]. [[Unconformity (geology)|Unconformably]] overlying these highly [[fault (geology)|faulted]] and [[fold (geology)|folded]] strata are outcrops of the early [[Devonian]] age Great Conglomerate Formation which forms a part of the [[Reston Group]] of [[Old Red Sandstone]] rocks. These coarse red-purple [[conglomerate (geology)|conglomerates]]<ref>{{cite web |title=Great Conglomerate Formation |url=https://www.bgs.ac.uk/lexicon/lexicon.cfm?pub=GCGL |website=Lexicon of Named Rock Units |publisher=British Geological Survey |access-date=19 June 2020}}</ref> underlie a band of country in the east between [[Longformacus]] and [[Oldhamstocks]] and also occur in an isolated outcrop east of Soutra Hill and beneath the Dun Law Wind Farm on the western margin of the hills. The same strata extend down Lauderdale on the western margin of the hills.
Numerous [[dike (geology)|dykes]] of different [[lithology|lithologies]] largely of Devonian age but some of [[Carboniferous]] age and with a generally NE-SW alignment occur throughout the area. The Priestlaw Intrusion is a mass of late Silurian/early Devonian [[granite]] which occurs in the area of Whiteadder Reservoir.
Glacial meltwater channels are common along the northern and eastern margins of the hills, with a notable group beneath Newlands Hill and Dod Law to the southeast of [[Gifford, East Lothian|Gifford]] and north of Deuchrie Edge and Lothian Edge, largely directed towards the northeast in these areas.<ref>{{cite web |title=Geoindex Onshore |url=https://mapapps2.bgs.ac.uk/geoindex/home.html |publisher=British Geological Survey |access-date=19 June 2020}}</ref>
==Geography==
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[[White Castle, East Lothian|White Castle]] was an [[Iron Age]] [[hill fort]], settled by the ancestors of the [[Votadini]] tribe.
[[Crystal Rig Wind Farm]] is located on the hills.
==Historical and literary significance==
The [[Kingdom of Northumbria|Northumbria]]n missionary bishop [[Cuthbert]] spent his early years as a shepherd on the Lammermuir Hills.<ref>{{Cite book |url=https://
Two ranges of hills in [[New Zealand]], the [[Lammermoor Range|Lammermoors]] and [[Lammerlaw Range|Lammerlaws]], are named after the Scottish hills.
==See also==
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* [https://web.archive.org/web/20050112041045/http://www.lammermuirhills.com/ Anti-windfarm Group]
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[[Category:Mountains and hills of East Lothian]]
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