Day 23: Data challenge 3 – GHSL – Mapping China’s Chongqing Region 30 Day Map Challenge 2021Christian PrzybylekDecember 24, 2021#30DayMapChallenge2021, Cities, GHSL, Chongqing, ChinaComment
Day 22: Boundaries - Diomede Islands (Russia/United States) 30 Day Map Challenge 2021Christian PrzybylekDecember 23, 2021#30DayMapChallenge2021, Bering Strait, Boundaries, Maritime, Diomede Islands, US - RussiaComment
Day 21: Elevation –Olympus Mons, Mars 30 Day Map Challenge 2021Christian PrzybylekDecember 22, 2021#30DayMapChallenge2021, Olympus Mons, Mars, Topography, Elevation, SpaceComment
