Question: where is the lost dutchman's mine supposed to be located?
Answer: in the southwestern United States

The Lost Dutchman's Gold Mine (also known by similar names) is, according to legend, a rich gold mine hidden in the southwestern United States.  The location is generally believed to be in the Superstition Mountains, near Apache Junction, east of Phoenix, Arizona. There have been many stories about how to find the mine, and each year people search for the mine. Some have died on the search.