Map Markers?

[Spanish1]

Has anyone seen symbols similar to these or familiar with a meaning.
(N. AZ S. UT area.)

 

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[Tom_in_CA]

Random meaningless squiggles on the desert floor ? And/or with benign more-plausible meanings other-than-treasure ?

I can probably find curious squiggles and designs in my own backyard, if I look long enough and hard enough.

 

[Digger RJ]

Has anyone seen symbols similar to these or familiar with a meaning.
(N. AZ S. UT area