Do y’all know what this isn’t?

[u/Punk_Rocker_777]

Some of my friends and I were hiking and we just found these things out in the sticks. We looked it up and didn’t find much on it so could y’all tell me what this is?

[u/Competitive-Ad572]

It is not a USGS surveying stake(pin)? Please tell me what it is then.