What the map shows
POTA only knows one point per park, no boundary. The areas here come from pota-map.info, where they have been maintained by hand for years. Click a park to see activations, first activators, overlapping references and the best spots to set up, plus the area as GeoJSON or GPX to take with you.
If you stand where two parks overlap, one setup activates several references. The “Only parks that overlap” switch leaves just those. Under “Outdoors” you'll find car parks, benches, shelters and the power lines you shouldn't set up under, all from OpenStreetMap.
Parks often have no mobile signal. “Save this area for offline use” stores our own base map with park boundaries down to three zoom levels deeper in your browser. The “Light” and “Topo” maps come from other people's servers and mustn't be downloaded in advance, so they're left out.
If you only want to know which references are nearby, the portable planner is quicker: it lists them with distance, sunrise and sunset and the repeaters behind you.