Blackadder is a hamlet on the B6460, in the Scottish Borders area of Scotland, located at grid reference NT846523 .
Places nearby include Allanton, Duns, Edrom, Fogo, Gavinton, and Whitsome.
55°45′50″N2°14′49″W / 55.76380°N 2.24699°W / 55.76380; -2.24699
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