Yellowstone is where I first heard about thermophiles. Thermophiles are heat tolerant organisms that lives in the hot springs. Various groups of thermophiles flourish at different temperature ranges. What is amazing is the explosion of colors they create – just take a look at Grand Prismatic.
The best view of Grand Prismatic is not from the walkways around the hot spring, it is from the closest nearby hill. Looking from above you can truly appreciate the size and the colors.
To get to the hill you’ll need to pack your hiking boots because this is not an official trail in the park and there will be no wooden walkways to follow. Use the parking lot about 1.5 kilometers south of the Midway Geyser Basin and cross bridge over the Firehole River.
Photo tips: Use a polarizing filter on your lens to reduce reflections on the hot spring surface and add vividness to the colors.