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.
Angaben gemäß § 5 TMG, Verantwortlich für den Inhalt nach § 55 Abs. 2 RStV:
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 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°,