Silbaby 17
Image by Dunstan
Silbaby

Silbury Mound

Silbury and Silbaby and The Sanctuary are all in a line. So that's a line, not two random points. People have been looking for alignments at Avebury for ages, but they haven't thought about that I'd have thought. So go on Blue Gloves, do the legwork!

If you can imagine 15 tonnes of gravel suspended a few feet off the ground - with me underneath - that's my life. Everything's as fast as the vegetative growth outside. I can do the calculation for this azimuth - but the legwork's being saved for a large-ish stone circle on Longpot Head. That's the name on the map.

I need a magnetic heading - in degrees - the elevation to the horizon - in degrees up (+) or down (-) - and the latitude and longitude, which I'd get from the OS atlas here. There's a man called Victor that has a declination calculator routine, on a webpage. Could doublecheck my result that way !