"Somebody" used Stan's metal stamp kit to make a plaque and affixed it to the Booth. It's still there, or so I hear from recent Booth visitors.

And "somebody" used auto hose bandage to mount an explanatory image, should any extraterrestrials visit the Booth.

Click either image to detour to a page with enlarged versions.

While the others fielded international phone calls, I buried a Wisconsin license plate (from Wag's Egyptian valet) & other valuable items.

Quartz marks the spot.