Live camera
Mammoth Cave National Park live camera — Kentucky
The park that holds the longest cave in the world. The camera stands above ground on the Green River bluffs facing north, and posts air quality alongside the view.
Sample September 2026What you are looking at
A park in Kentucky containing the longest cave in the world. The camera is above ground, facing north from the bluffs over the Green River, and air quality figures are shown alongside it.
More than 600 kilometres of passage have been surveyed so far, and the total is still growing. The reason for that length is the rock lying on top. A hard sandstone cap sits over the limestone, so rainwater ran sideways instead of straight down and the ceilings were never brought down. The place where the river cut through that cap is the bluff in the frame. It was inscribed as a World Heritage site in 1981. The cave interior is not shown; the camera looks only at the valley above ground.
Guided visits began in 1816, which makes this one of the oldest tourist attractions in the country. The man who mapped much of the far passages in the 1840s was a guide held in slavery. Around the time of the war of 1812 the cave was also mined for saltpetre, an ingredient of gunpowder.
Central time, fourteen to fifteen hours behind Japan; around eleven at night in Japan is local morning. It is a still image, and nothing shows at night.
About this camera
| Place | Kentucky |
| Format | Still image |
| Time zone | America/Chicago (UTC-6, DST UTC-5) |
| Category | World Heritage · Nature · River |
| Operator | U.S. National Park Service |
| Terms of use | U.S. government work |
The operator's own page
The footage belongs to each agency. This site is an unofficial guide, and each sample frame was copied once per camera under that agency's terms of use.
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