As of early October 2025, Yellowstone National Park has set a record by collecting over 23,000 pieces of litter, including items such as coins and golf tees. The park, which hosted more than 4.7 million visitors this year, struggles with trash build-up, especially in busy zones. This waste poses risks to hydrothermal features and can change water chemistry, impacting places like the Morning Glory Pool, which has not returned to its original hue after debris removal efforts.
Key facts
- Over 23,000 pieces of litter were collected by early October 2025.
- In 2025, Yellowstone welcomed more than 4.7 million visitors.
- The geology team retrieved about 10,700 rocks and sticks.
- Foreign items can damage hydrothermal features and change water chemistry.
- The Morning Glory Pool's hue altered in the 20th century due to waste.
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