Missing Maps validation mapathon

If you have at least intermediate mapper status on HOT Tasking Manager website join us to start your validator journey! Doesn't matter if you never validated a task before or if you are a member of HOT Global validators team. Everyone is welcome to join and share their knowledge!

We will show you how to validate projects on Humanitarian OpenstreetMap Team Tasking Manager using JOSM, how to properly give feedback, examples of bad mapping, which mapping errors needs to be fixed and why. If you already know how to validate you are very welcome to join us as well to meet other validators, share your tips and experience.

Previous JOSM mapping experience is required, but no validation knowledge is necessary.

There will be two 2 hours sessions, 08:00 and 16:00 UTC on 23rd of June 2026