Mapper since: April 28, 2013

I study geology, geography and cartography (Charles University, Prague) and work for the Czech Geological Survey. I use the Osmand android app for hiking, field work and other outdoor activities. It's very useful. I improve OSM by recording unknown paths and objects and correcting map data in my home area to help other OSM users for their trips and field works. I also use historical maps and digital elevation model (hillshade, slope, aspect) for mapping surface features.