Marked by or featuring cairns (piles of stones); having been built up or indicated with cairns for navigation or memorial purposes.
From cairn (a pile of stones, from Scots Gaelic 'càrn') plus the suffix '-ed' meaning 'having' or 'marked with'. Cairns are ancient human constructions found across cultures worldwide.
Hikers follow cairned trails in mountains worldwide—we're basically following in the footsteps of ancient peoples who stacked stones thousands of years ago to say 'this way is safe'!
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