Recent Geomob Berlin speaker and avid cyclist Dave Whittingham discusses his project Kreuzungen, a service that allows users to upload their GPX tracks and find out which rivers they have crossed. The project started as a fun idea and has now gained popularity amongst Strava users. Dave highlights the importance of open data and open-source tools in making the project possible. Kreuzungen serves as an example of learning through experimentation and play in the geospatial community.

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