set with effort from aidan and kai https://dronesafetymap.com/#loc=51.3588639,-0.3908838,13.352914212780224 from network, we get geojson file https://geojson.io/ convert and improt to google earth

for a*, emergency landing, with set parameters, say for emergency decend path, consideration of high building and hard restricted zone, and zones trying to avoid (but can pass through, e.g. ecosystem etc.) penalty zone is 1.3