A mystery buyer purchased entire California ghost town Eagle Mountain for $22.5M
sfgate.com
sfgate.com
It isn't a huge logical leap to figure out what the old iron ore mines will be filled in with.
https://www.desertsun.com/story/news/environment/2014/11/20/...
More seriously, it's not a town at all, just a piece of property on unincorporated land. The taxes should be similar to other comparable properties.
You pay property tax to the county.