With that final step toward the geyser, Thomas became the youngest person in history to complete all three trails, called the “triple crown” of hiking.
Doing so requires trekking nearly 8,000 miles and climbing more than 1,000,000 feet in elevation.
They seemed to get on well via email, but whenever it came to meeting up, there was always a problem.
On September 18, nine-year-old Christian Thomas stood in front of Old Faithful in Yellowstone National Park with his parents, Andrea Rego and Dion Pagonis.
“I felt really proud of what I did and also what my family did.