# Hacking Erpel Hacking Erpel (short HEPL) is a currently irregular Free Software Hacking event happening between Bonn and Koblenz in [Erpel][]. [[!map pages="hepl/* and ! hepl/*/*"]] There's a [mailing list][] that will get announcements of upcoming HEPLs and summaries of past events. It's extremely low volume with about <10 messages per year. [Erpel]: https://de.wikipedia.org/wiki/Erpel [mailing list]: https://lists.sigxcpu.org/mailman/listinfo/hepl