Steaming rivers, stone forests, and bubbling lava are a daily occurrence at Yellowstone National Park. It’s the oldest national park in the world and is renowned for its pristine nature and extreme climates. Nowhere else in America can you take a vacation where you drive by a herd of buffalo, watch boiling water shoot into the sky, and feel the slight tremour of earthquakes below your feet. With one of the world’s biggest volcanos underneath and millions of tourists on top, Yellowstone is a beauty of contrasts—a delicate relationship between man and nature.Modern interest in Yellowstone occurred during one of America’s most adventurous eras. In the early 1800s, the famous Lewis and Clark Expedition hacked its way through America’s wilderness in search of elusive trade routes. When confronted with Yellowstone’s terrain, they decided to take a different path. However, one man—John Colter—decided to brave the wilderness and find out what the Native Americans called the “land of fire.” When Colter returned to civilisation, he kept using the famous biblical saying “Fire and brimstone!” to explain where he had been. But he wasn’t talking about hell: he was trying to describe Yellowstone’s extreme terrain!