Sedan crater.
https://en.wikipedia.org/wiki/Sedan\_Crater

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Category: Physics & Astronomy How I Designed This

http://touchterrain.geol.iastate.edu/?DEM\_name=USGS%2FNED&hs\_gamma=1.0&map\_lat=37.17660417530193&map\_lon=-116.04599318012286&map\_zoom=15&trlat=37.18544541797151&trlon=-116.03505428024681&bllat=37.16800692402216&bllon=-116.05711276718529&tilewidth=180&ntilesx=1&ntilesy=1&printres=0.5&basethick=1&zscale=1.0&fileformat=STLb