Postal news for those interested in the mailing industry, postal employees, stamp collecting, etc... This site is not affiliated with the U.S. Postal Service
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Thursday, November 2, 2023
Carlsbad Caverns postcard mailed from 750 feet underground
"...Carlsbad Caverns National Park in New Mexico has a mailbox 750 feet underground, and mail sent from there receives a handstamp noting the distance below the surface...."