Discussion: Uncrossable

Looking at Routegadget, the vegetation seems to be marked differently to your extract, so the green-black is bright-green fight rather than do-not-cross. Still definitely looks like the control should be on the south side of the wall though

Agreed - actually the extract above is indeed from Routegadget, but looking at the paper map now, it is clearly 100% green rather than green-black. However, looking further, the control description is wall, south side, so it was in fact hung on the wrong side of the wall.

Hmm, that's interesting, does a control have to be physically mounted in the place shown in the descriptions, or does it just have to be found from there. In this case, it was accessible from the South Side, without properly crossing the wall, but perhaps for convenience attached to the north side? I could see something like that happening in the City Race, where we have a control poking through a gate, but secured to an object on the other side for convenience / security

It is meant to be mounted on the feature in the description. So when the description is "south side of wall" the control should be on the south side of the wall (or as close to it as possible). If not possible the description should be changed - for london we tried to do descriptions from where the control could actually be hung. The only slightly dodgy one (I think) is when we had East Side of Tree and the control was on a bench a couple of metres away (cos the tree was too hide) but controller agreed this was ok as there would be no doubt it was the corret control.