Yellowstone National Park is a big place—2.2 million acres (899,116 ha), which is larger than the states of Rhode Island and Delaware combined! Rangers work hard to preserve the park resources for your—and future kids'—enjoyment.
Check out some of the popular questions that visitors ask Yellowstone rangers. Maybe you will learn some cool facts about Yellowstone.
Yellowstone is located on top of one of the world's largest active volcanoes.
It depends on the time of year. During the spring melt of snow, there can be 63,500 gallons (240,000 l) per second flowing over the brink of Lower Falls. The flow can drop down to 5,000 gallons (18,900 l) per second in the fall.
Scientists started watching the Yellowstone volcano 50 years ago. Geologic activity at Yellowstone has remained relatively constant. Another caldera-forming eruption is possible, but it is quite unlikely in the next 1,000 or even 10,000 years.
An Old Faithful Geyser eruption can release 8,400 gallons (31,797 l) of water.
Yellowstone National Park is named after the Yellowstone River, the main river running through the park. According to French-Canadian trappers in the 1800s, they asked the name of the river from the Minnetaree tribe, who live in what is now eastern Montana. They responded "Mi tse a-da-zi," which translates as "Yellow Stone River." The trappers translated this into French and in 1797, explorer-geographer David Thompson first used the English translation.