Defined by John G Williams, SCEMB lines use a subset of the normal ley line markers. From "The Ley Hunter" April 1970
My SCEMB line system differs from the ley system in as much that the only points accepted on an alignment are the following.
S Standing stones, stone circles C Cairns or tumuli, camps of pre-Roman origin. E Earthworks of pre-Roman origin M Moats and mounds of pre-Roman origin B Burial barrows
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