Strolling on the boardwalk of the largest hot spring in North America 😎.
.
And here’s 2 reasons why you can’t get off the trail:
1️⃣ Even in the spots where the ground looks solid, it’s possible to land in boiling hot water and get severely burned.
2️⃣ The spring’s thermophiles (heath living bacteria) are responsible for the bright colors of Grand Prismatic.
Any foreign interference in the spring could negatively impact the ecological balance of the bacteria.