If it is posted on the Internet, then it is likely to be populated... off season maybe excepted.
A few years ago I wanted to start hiking in Nevada, so I got a big map of the state. Then I looked at vast areas with no roads, but possible water sources. Then I filtered down to research specific areas... geologic formations, fauna, etc. Now if there was a well used trail, it was struck from my list of potentials. If a posted cross-country route with GPS way points was posted, it went to the bottom of my list. If a posted cross country route with vague descriptions and warnings of getting lost are found it went to the middle of my list. Routes that looked feasible from a topo map with no trails, now get hiked every year.
I do the same thing here in southern California with millions of inhabitants. Beautiful solitary places with large loops, and no people.