With their lack of sunlight, cold temperatures, and sometimes unknown conditions, caves can be downright creepy… but do you want to know what makes caves even more scary? When they are HAUNTED, which is what has been alleged of this one Colorado cave that you will want to stay far, far away from:

While Colorado is home to countless majestic mountains, one of the most stunning of all would have to be that of the Sangre De Cristo mountain range near Westcliffe with its colorful Marble Mountain.

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Boasting an elevation of 13,226 feet (and coming in as the 427th highest peak in Colorado), Marble Mountain is a true hiker’s delight with a distance of 12 miles round trip and an elevation gain of a whopping 3,400 feet.

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While thousands of hikers each year enjoy visiting the stunning Marble Mountain, not many realize that hiding within it is not only one of the deepest and most dangerous caves in the country, but also a cave with a deadly secret.

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Re-discovered in the early 1900s, La Caverna del Oro (which is also known as the Marble Cave and Spanish Cave) has turned out many treasures over the years, including large amounts of gold in the 1500s, arrowheads, hundreds-of-years-old tools, and antique Spanish armor… pretty cool, right? Well, not so much, as the Spanish armor was actually atop human remains, meaning that someone (as well as several animals who met their fate in this deep, dark cave) died in the cave some few-hundred years ago, leaving behind not only a perfectly preserved skeleton, but what some allege to be a spirit still roaming the mysterious cavern.

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For even more of Colorado’s best caves, check out these 11 Colorado Caves And Mines Ready For Exploring.

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