The “Furnace” Inside the Earth#
Have you ever seen the ground bubble?
In Yellowstone Park, USA, the ground steams, springs boil, and geysers erupt on schedule — shooting water columns once an hour.
The reason: beneath Yellowstone lies a massive magma chamber.
It’s like a “furnace” inside the Earth’s belly, burning for millions of years.
Old Faithful Geyser#
Yellowstone’s most famous attraction is Old Faithful Geyser.
It erupts roughly every 90 minutes, shooting 40,000 liters of hot water each time, with columns reaching 50 meters high — as tall as a 16-story building!
Why “Old Faithful”? Because it’s extremely punctual — for hundreds of years, it has erupted at roughly the same intervals, never “late.”
Colorful Hot Springs#
Yellowstone also has the Grand Prismatic Spring.
It’s the largest hot spring in the United States, 110 meters in diameter, with water temperatures reaching 70°C.
The most magical part is its colors — from center to edge, they shift from blue to green to yellow to orange to red, like a rainbow.
These colors are produced by microorganisms — different microbes grow at different temperatures, creating different colors.
Yellowstone Supervolcano#
A supervolcano hides beneath Yellowstone.
It’s much larger than ordinary volcanoes — the magma chamber is 80 kilometers long and 40 kilometers wide.
This supervolcano erupts roughly every 600,000-800,000 years. The last eruption was 640,000 years ago.
If it erupted again, the consequences would be severe — volcanic ash could cover much of the United States.
But scientists say the chance of eruption in the near future is very low, so there’s no need to worry.
A Wildlife Paradise#
Yellowstone isn’t just about geothermal features — it’s also a wildlife paradise.
Here you’ll find bison — North America’s largest land animal, weighing up to a ton.
There are grizzly bears — enormous, but they generally don’t attack people.
There are wolf packs — reintroduced to Yellowstone in 1995, their return made the entire ecosystem healthier.
Learn from the World#
Yellowstone teaches us one thing: the Earth is alive.
Beneath the ground, there’s scorching magma. On the surface, there are boiling springs. In the sky, there are running bison.
Earth isn’t a cold rock — it has a heartbeat, it breathes, it has its own life.
Knowledge Card#
- Location: Wyoming, United States
- Type: Fantastical Natural Landscape
- Key Numbers: 8,983 sq km, over 10,000 geothermal features, about 500 geysers
- Science: Underground magma chamber heats groundwater, creating geysers and hot springs
- Fun Fact: Yellowstone is the world’s first national park (established in 1872)
- UNESCO: Listed as a World Heritage Site in 1978
- Source: U.S. National Park Service