> Maps aren't detailed enough, Yes they are. All of the US is mapped to 3m horizontal resolution and 1m vertical resolution, the world to 15m. This is grossly

> Maps aren't detailed enough, Yes they are. All of the US is mapped to 3m horizontal resolution and 1m vertical resolution, the world to 15m. This is grossly overkill. A 30m lossless compression dataset will run you about 1GB, which is plenty for this purpose. It's free too. https://terra.nasa.gov/news/aster-digital-elevation-model-version-3-released https://terra.nasa.gov/news/aster-digital-elevation-model-ve...