Highlight • Natural Monument
Hiking
5.0
(17)
Doublet Pool is a captivating hot spring and natural monument nestled within the iconic Upper Geyser Basin of Yellowstone National Park, Wyoming. Situated at an elevation of approximately 2238 meters, this distinctive feature is renowned for its vibrant blue waters and unique geological characteristics. It appears as two clear, interconnected pools on the surface, though it is one body of water below, framed by delicate, scalloped edges made of geyserite. Its location on Geyser Hill places it conveniently close to…
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September 2, 2024
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Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
Details
Informations
Elevation 2,240 m
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Friday 13 March
4°C
-1°C
46 %
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Max wind speed: 38.0 km/h
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Doublet Pool is located within the Upper Geyser Basin, a short walk from the Old Faithful area. From the Old Faithful Visitor Education Center parking lot, it's generally a leisurely walk of about 0.5 to 1 mile (0.8 to 1.6 km) along well-maintained boardwalks. This typically takes 15-30 minutes, depending on your pace and how often you stop to observe other thermal features along the way.
Doublet Pool is part of the extensive boardwalk system on Geyser Hill in the Upper Geyser Basin. The most common way to visit is by following the boardwalk loop that connects Old Faithful with other prominent features like Beehive Geyser and Giant Geyser. There isn't a single 'trail' to Doublet Pool, but rather a network of accessible boardwalks that guide you through the area. These routes are generally flat and easy to navigate.
Yes, Doublet Pool is very family-friendly. The walk to the pool is short and easy, primarily on boardwalks, making it suitable for all ages, including young children and those with strollers. However, it's crucial to keep children close and always stay on the designated boardwalks, as the thermal features are extremely hot and dangerous. Educate children about the importance of not touching the water or venturing off the paths.
No, pets are generally not allowed on boardwalks or trails in Yellowstone National Park, including those leading to Doublet Pool. Pets must be restrained in a vehicle, in a crate, or on a leash no longer than six feet and are only permitted within 100 feet of roads and in developed areas like campgrounds and parking lots. Service animals are an exception to this rule.
Doublet Pool is renowned for its vibrant blue water, delicate scalloped edges made of geyserite, and its unique 'thumping' phenomenon. While it appears as two interconnected pools on the surface, it's one body of water below. The thumping, which occurs approximately every 20 to 30 minutes, involves the water rising, bubbling, and the entire pool lifting slightly with audible vibrations. This is caused by collapsing steam bubbles deep underground and offers a tangible connection to Yellowstone's powerful subterranean forces.
The 'thumping' at Doublet Pool is caused by the collapse of steam bubbles deep within its plumbing system. As steam rises, it forms bubbles that then collapse, creating a vibration that can be felt. Visitors can often experience these subtle vibrations by placing a hand on the boardwalk or sitting on a nearby bench during the thumping episodes, which typically last 5-10 minutes. It's a unique way to feel the park's active geology.
To avoid the largest crowds, especially during peak summer months, consider visiting Doublet Pool early in the morning (before 9 AM) or later in the afternoon (after 4 PM). These times also often offer softer light for photography, enhancing the pool's vibrant colors. The thumping activity occurs regularly throughout the day, so you don't need to time your visit for a specific eruption.
There are no direct amenities at Doublet Pool itself. However, due to its proximity to Old Faithful, visitors have easy access to a range of facilities. The Old Faithful Visitor Education Center, Old Faithful Inn, and Old Faithful Lodge offer restrooms, dining options, gift shops, and visitor services, all within a short walking distance from Doublet Pool.
Yellowstone's weather can be highly variable, even in summer. Hikers should dress in layers, allowing for adjustments to temperature changes. Comfortable, sturdy walking shoes are essential for navigating the boardwalks and any short trails. A hat, sunscreen, and rain gear are also recommended, as conditions can change quickly. Even on warm days, mornings and evenings can be cool.
Doublet Pool is a hot spring with an average temperature of approximately 187.8°F (86.5°C), though some sources indicate it can reach up to 194.4°F (90.2°C). This temperature is extremely hot and can cause severe burns. For your safety and the preservation of the natural feature, it is absolutely critical to never touch the water or venture off the designated boardwalks and trails.
While Doublet Pool primarily exhibits bubbling and steaming activity, it has experienced rare eruptions. Records indicate only four such instances, which are not typical geyser-like water columns but rather areas where water boils up about two feet. Two of these coincided with activity from Giantess Geyser, one occurred after the Hebgen Lake earthquake, and another during unusual behavior on Geyser Hill in 2018.