Friday 13 November 2020

Orienteering map mystery . . . where is the old map . . . find the location . . . ?

 On Facebook, the challenge: . . . 

Name that map: Orienteering maps have come a long way since we started running in the forests. Can anyone identify these two black and white maps from the 1960's or early '70's? We genuinely don't know where they are, but almost certainly in Wicklow.


6" = 1 mile but what size is the map ? not sure

Surfaced road bordering the East of map, pretty flat coming from just below 700 feet to North of map to just over 700 feet in bottom half of map. Why does the map stop at this road ? Probably not coast or water, probably just convenient to stop.

A hill with peak over 1100, shoulder over 900 feet and another peak ?1200 feet high, flat on top and steep slope down to road.

Is it possible to search map data for hills like these ?
OpenStreetMap has this search: https://overpass-turbo.eu/
This query searches for hills over 330m and less than 390m.
But we are reliant on the top of hill being entered as a node peak feature with the altitude.
node [natural=peak] (if:t["ele"]>330 && t["ele"]<390)({{bbox}}); out;
1300 feet = 396m
1200 feet = 365.7m
1100 feet = 335m
900 feet = 274m
700 feet = 213m

So we are looking for peaks just over 330m and 360m with shoulder to over 275m and road to E at about 200m.

OpenStreetMap overpass turbo script run searching for peaks at the right height.

... .. .
this is hard work now.
Using the openstreetmap overpass turbo result as a starting point.
Using opencyclemap to check contours.
Using google maps satellite view.
Following 200/210m contour lines all around the country . . looking for roads at that level heading SSE . . .

Donard near Glen of Imall ?
Ballycumber hill/wind farm W of Aughrim E of Hackettstown ?
just N of Aughrim W of Macreddin ?
Saggart Hill ?
Near Blessington ?
Glen of the Downs ?
. . Low hills in midlands somewhere ? in the SW ? . . .

wow. so difficult.







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