Where is (or was) Project HARP's Yuma Arizona space gun?

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The Yuma Proving Ground is not accessible by civilians unless you have contacts in the Army. The test site is located in the KOFA Range. The 16" gun is at (old) gun position 10. I have posted a satellite image below with the coordinates:

16" HARP gun at Yuma Proving Grounds

As you can see, the gun is still in place. The tubes to the north of the gun are alternative barrels.

There is a HARP gun on Barbados that you can visit.

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