
The Hike to the Cave Entrance
Distance: 1.5-mile / 3 Mile RT
Elevation Gain: ~1k ft
Difficulty: It’s a steep, sun-exposed, paved trail. Know your limits. (Hats, water, running or hiking shoes.)
Cave Temps: 43° to 49°F, wear layers
Scenic Location: The Timpanogos Cave system (Hansen, Middle, and Timpanogos) is located on the south side of the steep-walled American Fork Canyon, in the center of the Wasatch Range at the convergence of the Great Basin, Unita Basin, and the Unita Mountains.


The 3 caves are located an average of 150–400 feet below the surface. Most of the ceilings are 5 feet or higher, so if you have slight claustrophobia like I do, you’ll be fine.
The caves formed along three minor faults and the bedding planes in the Tetro and Uncle Joe Members of the Deseret Formation. They are distinguished by vibrant colors and plentiful delicate helictites (sideways, curving), rare anthodites (flower/snowflake/coral-like), and stalactites (hanging from the cave ceilings like icicles) and stalagmites (rising from the cave floor). The mineral deposits that form from slow drops of water over the ages and sometimes meet, connecting to form stalagnates—single pillars from the cave’s ceiling to its floor. All of these structures take thousands of years to “grow” just a few inches.









History: From discovery to preservation, the story of the Timpanogos Cave System is one of exploration, irreplaceable loss, and ultimately protection.
Pioneer logger Martin Hansen discovered Hansen Cave in 1887, and his family soon began guiding visitors through its remarkable passages. In the early 1890s, the Duke Onyx Company mistakenly believed the cave’s colorful calcite flowstone was valuable onyx. In those days, miners relied on appearance to make their determinations, rather than hardness or acid test, which would have distinguished quartz-based onyx from soft calcite (fingernail texture/fragility). Based on the false assumption that the flowstone was Onyx, the company removed a massive 15-ton slab—erasing millions of years of natural history in just a few months.
In 1913, teenage explorers James Gough and Frank Johnson discovered Timpanogos Cave while touring Hansen Cave with their families. Like many at the time, they believed the cave contained valuable minerals and filed mining claims. After years of legal disputes, independent geological experts confirmed that the limestone caves contained no precious ores.
Recognizing the caves’ true value as a natural treasure, President Warren G. Harding signed Proclamation No. 15040 in 1922 under the Antiquities Act of 1906, permanently protecting the cave system for future generations.
Today, Timpanogos Cave stands as a reminder of how easily and carelessly Earth’s greatest treasures can be destroyed and how important it is that we practice stewardship, protection, and preservation.
Getting there: Visitor Center& Trailhead,2038 W. Alpine Loop Road, American Fork, UT
Into caves? Check out these caves in New Zealand and Thailand.
Happy Caving!















































































