News are distributed via the blog (in German).
You can report bugs at the map's github-page , where you can also find the complete source code.
The hillshading map tiles are generously provided by the OpenMapSurfer project of Heidelberg University unter the following copyright terms:
Map data © SRTM; ASTER GDEM is a product METI and NASA, Imagery GIScience Research Group @ Heidelberg University
The 'administrative boundaries' map tiles are generously provided by the OpenMapSurfer project of Heidelberg University unter the following copyright terms:
Map data © Openstreetmap contributors; Imagery GIScience Research Group @ Heidelberg University
The displayed geocaching data is gathered by the Opencaching-API (OKAPI) from the national Opencaching sites Opencaching.de, Opencaching.pl, Opencaching.nl, Opencaching.org.uk, Opencaching.us, Opencaching.ro and is subject to the associated data licenses.
Waypoint projection creates a new marker d meters away from the source marker with a bearing angle of β°,