I anyone is having trouble with terrain.party, try this:
It’s offered up by a generous subscriber here and might work where you are. I’m looking for other alternatives as it seems that there is some international geodata non-sharing thing going on…
Here is another resource that some are using: https://tangrams.github.io/heightmapper
Blender 2.8 gives us some awesome tools to create terrain and environments. This video shows you how to use imported geo data and procedural shading to create a somewhat believable environment quickly.
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