Hi there !

I have written a dirty plugin for people using SimpleNG theme, OpenStreetMap plugin and publishing pictures of outings.
This tool creates a map with one GPX track and thumbnails of all geotagged pictures of a given category.

Here is source code and manual: https://git.lstronic.com/gogs/leo/PiwigoImagesAndGPX
Backup mirror: https://github.com/LeOSW42/PiwigoImagesAndGPX/

Here is an example (french): https://leo.lstronic.com/piwigo/index.php?/category/62

Léo