Reference: Tim Sandles, Legendary Dartmoor, Gazetteer.

Callisham Down

Reference: Mike Brown (1995): The Gazetteer of Dartmoor Names.

B.M. 0586.2, S facing (Not Located)

Notes: This benchmark wasn’t found, most likely because of the dense vegetation at the ‘supposed’ location. There are two modern gateposts at the site which once upon a time might’ve replaced older ones, one of which may have housed this elusive benchmark.

Reference: Side by Side