Yellowstone Caldera
The Yellowstone Caldera is a large volcanic collapse structure within Yellowstone National Park in the United States.
Also known as: Yellowstone supervolcano caldera
How big is it?
70 km long
Also 43.5 mi
Approximate long axis · approximate
Typical recorded range: 65 km to 75 km.
A little perspective
One-hour drive at 100 km/h is about 1.43 times larger on this measurement.
One-hour drive at 100 km/h: A one-hour drive at a set speed is the distance a vehicle travels in one hour of uninterrupted motion.
Measurements, assumptions & sources +
Yellowstone Caldera
Yellowstone’s youngest caldera is approximately 70 km by 45 km. The measured lines are broad map-scale axes, not a surveyed rim or hiking route.
The marked approximate long axis is calibrated. Unmeasured illustration details are representative.
One-hour drive at 100 km/h
A defined distance at a constant speed, excluding delays.
Defined examples — our methodology
The marked distance is calibrated. Unmeasured illustration details are representative.
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Why this measurement?
Why we use 70 km
For comparison, this page uses approximate long axis. This is labelled approximate; the central value is useful for comparison, while real values or measurement solutions can vary. The recorded range is 65 km to 75 km.
Yellowstone’s youngest caldera is approximately 70 km by 45 km. The measured lines are broad map-scale axes, not a surveyed rim or hiking route.
The marked horizontal span follows the named feature; transparent margins and unmeasured details do not alter it. How calibrated comparisons work →
Recorded properties
Yellowstone Caldera dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 70 km | 65 km to 75 km | approximate | |
| 45 km | 40 km to 50 km | approximate |
Around this scale
Go smaller. Go bigger.
These links use compatible length records, ordered around the selected value.
Nearest lower value · SpaceMetis43 kmMetis is an irregularly shaped inner moon of Jupiter, orbiting close to the planet's cloud tops.
Around the same scale · TransportOne-hour drive at 100 km/h100 kmA one-hour drive at a set speed is the distance a vehicle travels in one hour of uninterrupted motion.
Nearest higher value · Places10,000 km² region100 kmA region is a large expanse of land defined by geographical or administrative boundaries.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
- USGS — Yellowstone calderaApproximate 70 by 45 kilometre dimensions of the youngest Yellowstone caldera.
There’s always another scale
Follow your curiosity.
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SpacePhobos22.53 kmPhobos is the larger and innermost moon of Mars, notable for its irregular shape and heavily cratered surface.PeopleOne-hour cycle20 kmA one-hour cycle is the distance covered by cycling at a constant speed for one hour without stopping.
SpaceNeutron star20 kmA neutron star is the dense remnant core left after a massive star explodes as a supernova, composed mostly of neutrons.PlacesChallenger Deep10.94 kmChallenger Deep is the deepest known point in the Earth's oceans, located in the Mariana Trench.
SpaceDeimos12.4 kmDeimos is the smaller and outermost natural satellite of Mars, with an irregular, rocky shape.