[editor-surveyor]

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>> “How old is the tree?” <<

Probably not a relevant point. - Many of the pines and cedars there are over 1000 years old.

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[Sacajaweau]

I was looking at the picture yesterday. I see a depression and the rocks and thought perhaps it was a property line. A little research would likely put us on the right track.

First thing I'd do is put a GPS location on the site...then try a metal detector to see if I could pick up any used shells or something that would give a better time frame....then start going through old maps.

I have some 1897 maps. I'll take a look just for the hell of it.