Big giant map

Terrain, topological, waterline not sure what it would be called but I think this would be the craziest LowRider project.

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Of course I am not going to run that for 11 hours but I wanted to see if it was even possible, looks like it is. I have a ton of settings to figure out and some samples to cut. Any ideas are welcome.

I found this, http://jthatch.com/Terrain2STL/ Seems easy enough lots of settings to get right but unless you know of something better?

I figure 4’x8’ HD foam spray glued to a 1/4" ply sheet so I can hang it on the wall after some sort of paint coating.

Need to cut some samples to see how thin I can go with the features still recognizable. I would prefer to only do one roughing/finishing pass all in one, foam is easy enough so as thick as my longest bit in one pass I hope.

Wow. That would be intense.

Why not just make it a lot smaller and then step closer?

Anybody could do that.