Midway Geyser Basin is located between Madison and Old Faithful and well worth visiting. One of the epic highlights of Yellowstone National Park Grand Prismatic Spring can be found here along with Excelsior Geyser, and Opal Pool.
Midway Geyser Basin - Yellowstone National Park
A great half-mile boardwalk loop trail from the parking lot guides you past both Excelsior Geyser and Grand Prismatic Spring.
This area has not always been known as Midway Geyser Basin in the past it was also called Egeria Spring, Excelsior Geyser Basin, and Hell's Half Acre. In 1871 it was called Half-way Group because it was between Lower and Upper Geyser Basins.
This is one of the most popular thermal features in the park! You will want to be prepared for it to be crowded!
Grand Prismatic Spring is 370 feet in diameter and more than 121 feet in depth. It is the third-largest hot spring in the world and the largest in the United States
The deep blue pool is surrounded by rings of yellow and orange bacteria that create a prism effect.
If you have seen photos of Yellowstone you can bet that a photo of Grand Prismatic Springs was included.
It is worth noting that the signs on the road say Midway Geyser Basin, not Grand Prismatic Spring so it can be really easy to miss that this epic spot is part of the geyser basin.
Excelsior Geyser erupted on September 14, 1985, to the height of 55 feet and lasted 46 hours. The last known eruption occurred in 1888.
At one time it was the largest geyser on earth. In the 1800s this geyser once exploded 300 feet high. It then remained inactive for 120 years.
The deep blue pool now produces 4,000 gallons of water per minute into the Firehole River. The water flows down several colorful drainage channels into the Firehole River.
Opal Pool is on the Midway Geyser Basin boardwalk right after Grand Prismatic Spring.
This small pool is gorgeous especially in the bright sun.
The final pool along the boardwalk is the Turquoise Pool. One thing to know is when you walk past Turquoise Pool you will need to cross the crowds that are starting the one-way boardwalk.
It can get a bit busy and hectic in this area of the boardwalk.
If you are visiting during the summer you will want to be prepared to wait to get into the parking lot. It took us over 20 minutes to get into the parking lot during our last trip to the park.
Later in the day, it looked like the line was even longer.
You may have to circle the parking lot a few times to find a parking spot. Grand Prismatic Springs is one of the most photographed spots in the entire park. You can expect a large number of cars and tour buses to be packing the parking area.
Make sure to plan enough time to truly be able to enjoy the area. There are benches for sitting and relaxing to just soak in the view.
At times the steam coming off of Grand Prismatic can completely cloud in the area. You will want to have enough time to come back and view the area again if it is fogged in.
Midway Geyser Basin is on the Lower Loop Road approximately 10.5 miles south of Madison on the west side of the road.
Nearby Yellowstone Attractions
Old Faithful - Old Faithful is just down the road from the Midway Geyser Basin.
Firehole Lake Drive - Check out the Great Fountain Geyser, White Dome Geyser, and Firehole Lake on this beautiful scenic drive.
Biscuit Basin - Check out Black Opal Pool and the Jewel Geyser in Biscuit Basin.
Fountain Paint Pot - Explore the Fountain Paint Pot Trail to check out the Celestine Pool, Jet Geyser, Fountain Geyser, and Clepsydra Geyser.
Firehole Canyon Drive - Check out Firehole Falls and Firehole River Swimming Area on this great scenic drive.
Fairy Falls - This gorgeous waterfall hike is the same parking lot of the Grand Prismatic Overlook Trail.
Check out all of the Yellowstone Campgrounds to help plan your time in the park.
Closest Yellowstone Lodging
Additional Yellowstone Resources
Yellowstone Lodging Guide -Check out all of the lodges you can stay in while visiting Yellowstone NP.
Yellowstone Camping Guide - Check out all of the campgrounds available within the park.
Things to do Yellowstone - Check out all of the top things to do in the park.
Yellowstone Facts - Learn more about the unique features in Yellowstone.
Free National Park Days - Check out all of the days the National Park Service waives park entrance fees.
National Parks in Wyoming - Check out all of the parks you can visit while in Wyoming.
Grand Teton Guide - Everything you need to know to plan a great visit to Grand Teton.