Enhance hillshade and elevation data

This is not urgent, but if you want to improve them in the future, here are some useful links:
Collect and combine open elevation data
Sonny's LiDAR Digital Terrain Models of Europe

Thanks. We are already using Sonny's Lidar for Europe, NASADEM and SRTM. We'll be looking to use more Lidar based DEM in US.

Closing for now. FYI we'll soon have a map tool to resolve elevation at a coordinates. That can be used to validate elevation accuracy.

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