For the CCC Camps 2014 and 2019, c3voc provided a separate OpenStreetMap-Compatible Website/API to manage Camp-Specific information, that does not belong into the official OpenStreetMap:
This is primarily a planning-utility for VOC, POC, NOC and other *OCs that need to map plan their Infrastucture before the camp – it is not intended to be edited by the public.
The CCC Camp-Map is located at https://maps.c3voc.de/#map=17/53.03122/13.30823&layers=D Although there is an interactive Map on that page, it only showing the CampMap-Data in the “Data” layer, as we not yet (and probably never) have our own map rendering stack.
If you do not know if you have an Account or do not remember your Password, go to https://maps.c3voc.de/user/forgot-password and request a new one. This page will explicitly tell you, when your Username is unknown. Please register an Account at https://maps.c3voc.de/user/new then.
Download and Install JOSM.
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The easiest way to download the complete Camp-Site is by using the Bounding Box
function with this Link: https://maps.c3voc.de/#map=17/53.03122/13.30823
Please remember again, that other *OCs use this in their way to plan their things. Do not change or remove things you do not know what they're for.