Copt Howe forum 5 room
Image by Jeff
Copt Howe

For Jeff

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Ta for the info folks. I'll take this as a sorta Gordian knot solution then.
If rock art ?=no and diameter>10 and depth>5 then bullaun? = true. Else bullaun? = false.
Either way, (stone+hole)*purpose=?????

I think location comes into it a bit as well e.g. rock art more likely to be in areas with nice views/high up/ near river or trackway routes?