Mapathon
From Infogalactic: the planetary knowledge core
A Mapathon is a coordinated mapping event. It is often held inside (armchair mapping) but can also be an outside or combined activity.
They can be organized
- from Google for massive updating Google map: see https://en.wikipedia.org/w/index.php?title=Google_Mapathon
- from caritative organizations for multiple [NGO] shared under OpenStreetMap: see http://www.missingmaps.org/
References
<templatestyles src="Asbox/styles.css"></templatestyles>
