• Steff's TravelsGeologic TreasuresTraveler
    Grand Prismatic Spring.
    Opal Pool.

    Midway Geyser Basin (2 of 3)

    May 28, 2019 in the United States ⋅ ☀️ 10 °C

    The most popular feature at Midway Geyser Basin is Grand Prismatic Spring. With a diameter of 370 feet, it's the largest hot spring in the United States. The Spring's vibrant range of colors results from microbial mats around the feature. The colors making up the Spring include: Red, Orange, Yellow, Green, and Blue.Read more