Just some of the hats collected by the Yellowstone National Park Geology Program from sensitive thermal areas throughout the park in 2025. (Margery Price/NPS via SWNS)
Yellowstone National Park Geology Program team member Mara Reed uses a long grabber pole to remove a park map, presumably blown from a visitor's hand or pack by the wind, from a feature in Upper Mammoth Terraces. (Samantha Hilburn / NPS via SWNS)
Yellowstone National Park Geology Program team member Margery Price installs a thermal danger sign near Maiden's Grave Spring along Fountain Flat Drive. (Samantha Hilburn / NPS via SWNS)
Just some of the hats collected by the Yellowstone National Park Geology Program from sensitive thermal areas throughout the park in 2025. (Margery Price/NPS via SWNS)
By Dean Murray
Geologists at Yellowstone National Park have pulled more than 300 lost hats from the famous hot springs.
Yellowstone National Park Geology Program team member Mara Reed uses a long grabber pole to remove a park map, presumably blown from a visitor's hand or pack by the wind, from a feature in Upper Mammoth Terraces. (Samantha Hilburn / NPS via SWNS)
Yellowstone National Park Geology Program team member Margery Price installs a thermal danger sign near Maiden's Grave Spring along Fountain Flat Drive. (Samantha Hilburn / NPS via SWNS)
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Keep it Clean. Please avoid obscene, vulgar, lewd, racist or sexually-oriented language.
PLEASE TURN OFF YOUR CAPS LOCK.
Don't Threaten. Threats of harming another person will not be tolerated.
Be Truthful. Don't knowingly lie about anyone or anything.
Be Nice. No racism, sexism or any sort of -ism that is degrading to another person.
Be Proactive. Use the 'Report' link on each comment to let us know of abusive posts.
Share with Us. We'd love to hear eyewitness accounts, the history behind an article.