There is a fairly nice base location near the center of the map that has ~6 coal and ~6 ore nodes, and is on a plateau making it functionally immune to NPC raids. I found it completely accidentally; there's the 3 wildlife sanctuaries around the outside of the map and they all face inward at different angles, so I was trying to triangulate where they were "pointing" to see if it was leading somewhere. Turns out it was leading to a sweet base location.

This is noteworthy because there's 4 resources (ore, coal, sulfur and quartz), so you need a base with access to 2 of them if you want to have all 4 generating passively.