Deep within Yellowstone lies the park’s greatest gem. As you walk up the steps at Midway Geyser Basin, the Grand Prismatic Spring emerges. Steaming mist rises from the superheated spring, revealing a stunning rainbow of color created by microbial mats around the mineral-rich water. It looks so surreal – how did nature create this? From above, it’s a life-changing view that leaves you in awe.