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  "path": "/features/salt-of-the-earth-vast-underground-salt-caverns-are-preserving-our-history-and-just-might-power-our-future",
  "publishedAt": "2026-03-02T14:09:34.000Z",
  "site": "https://eos.org",
  "tags": [
    "Features",
    "business & industry",
    "caves",
    "culture & policy",
    "Earth science",
    "Energy",
    "geology",
    "history",
    "hydrogen",
    "land use",
    "mining",
    "salts & sodium",
    "travel & tourism"
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  "textContent": "Thousands of film reels are stacked in an Underground Vaults & Storage (UV&S) storage bay in the Hutchinson, Kan., salt mine. Credit: Courtesy of UVS",
  "title": "Salt of the Earth: Vast Underground Salt Caverns Are Preserving Our History—and Just Might Power Our Future"
}