The Pacific Ocean's Ring of Fire contains a chain of volcanoes roughly 25,000 miles long.
Notes on verification
Confirmed by NOAA, Wikipedia, and Britannica with consistent ~25,000 mile (40,000 km) figure and multiple corroborating sources.
Sources
- The Pacific Ocean—facts and information (nationalgeographic.com)
- https://oceanexplorer.noaa.gov/ocean-fact/rof/ (oceanexplorer.noaa.gov)
- https://www.foxweather.com/learn/understanding-pacific-ring-fire-where-earthquakes-volcanoes-meet (foxweather.com)
- https://www.britannica.com/place/Ring-of-Fire (britannica.com)
- https://en.wikipedia.org/wiki/Ring_of_Fire (en.wikipedia.org)
- https://www.earthdate.org/episodes/pacific-ring-of-fire (earthdate.org)