Maen Llia 7
Image by GLADMAN
Maen Llia

Welsh Ramblers walks May 2014

thesweetcheat T
thesweetcheat May 17, 2014 17:59:54
Replying to tiompan

tiompan wrote:
Sanctuary wrote:
Hooray...someone who's actually out in the field doing real research and not just sat at a computer googleing and reading work carried out by others. Way to go Cerrig.
The suggestion of equidistance is not due to field work but sitting at home poring over a map with a ruler .
I don't know - the Coflien notes make it clear that quite a lot of fieldwork took place on site, presumably equipped with modern surveying equipment.

If the equidistance is only derived from map and ruler, I would be very sceptical because of the very very small scale of the map - unlikely to be bigger than 1/10000 and more likely 1/25000. The limitations of scale at such a scale are extreme. The thickness of the line on a map at that scale is a couple of metres across on the ground! At 1/10000 a point on a map might be 8 metres out on the ground.

T tiompan
tiompan May 17, 2014 18:17:47
Replying to thesweetcheat

thesweetcheat wrote:
tiompan wrote:
Sanctuary wrote:
Hooray...someone who's actually out in the field doing real research and not just sat at a computer googleing and reading work carried out by others. Way to go Cerrig.
The suggestion of equidistance is not due to field work but sitting at home poring over a map with a ruler .
I don't know - the Coflien notes make it clear that quite a lot of fieldwork took place on site, presumably equipped with modern surveying equipment.

If the equidistance is only derived from map and ruler, I would be very sceptical because of the very very small scale of the map - unlikely to be bigger than 1/10000 and more likely 1/25000. The limitations of scale at such a scale are extreme. The thickness of the line on a map at that scale is a couple of metres across on the ground! At 1/10000 a point on a map might be 8 metres out on the ground.

The original suggestion for the equidistance , as noted earlier , was by Bill ? Griffiths in the 60's .The site description notes are from the 80's . Yes using rulers and pencils is hardly idela for precision (as the ley hunters found difficult to accept many years ago ) , but then again there is a margin of error due to the diameter of the ringwork and cairn . also noted earlier

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