Last year I began importing Maryland Department of Natural Resources lands but my progress slowed as I reached the populated areas of Central Maryland. Today I have restarted the process a bit with a custom translation for Paul Norman’s ogr2osm tool.

Here are some beautiful new parks on the map:

• Patapsco Valley State Park, Howard County side (partially incomplete)
• Gambrill State Park, the state owned part
• Patuxent River State Park

Adding the parks is fairly manual but produces great looking map data. Let me know if you want to help out!