While most outdoorsy attractions in Colorado require physical exertion to get to, the hot springs spread around the state offer a much more relaxing experience. They come in all different shapes and sizes—some only accessible by hike, some clothing optional, some commercialized to the point where it’s basically a swimming pool. One hot spring that’s especially unique can be found in Pagosa Springs, the world’s deepest geothermal hot spring.

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Located at the Springs Resort & Spa in Pagosa Springs, Colorado, the “Great Pagosa Hot Springs,” also known as “The Mother Spring,” was 1,002-feet deep at its last measurement in 2011. Believe it or not, that’s not even as deep as it gets…the line they were measuring the spring with ran out before hitting the bottom.

Despite the ambiguity of its actual depth, that test was enough to earn The Mother Spring the official world record.

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The average temperature of the water that eventually pumps into a turquoise-colored pool is around 144 degrees Fahrenheit.

The Great Pagosa Hot Springs was discovered by the Southern Ute Indian Tribe and has been revered for its healing powers ever since.

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