The only time we’re grateful for erosion is when we gaze upon the Chalk Pyramids, also known as Monument Rocks. It’s situated west of the Castle Rock area in Gove County and is the only remnant of the vast inland sea that existed some 80 million years ago. Today, it’s the first natural landmark in Kansas, designated in 1968. Even though it’s located on private range-land, the owners have been kind enough to share it with the public.

Once existing as limestone on the floors of an inland sea, various elements of nature and the erosion of the sea bed, carved these sedimentary formations as the sea dried away.
Traci Westhoff/Alltrails
Today, it stretches up to 70 feet in height, and viewing them up close and personal, makes for a spiritual experience.
Traci Westhoff/Alltrails
The beauty, magnitude, serenity, and naturalness of Chalk Pyramids will engrave into your memory for many years, if not forever.
Leah Metzger/Alltrails

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The 70-feet projections have been aptly named after their unique shapes.
Aaron Makinen/Alltrails
On your visit, you’d see Charlie the dog and Eye of the Needle, alluding to the sedimentary rock with a hole in its center.
In 2007, Monument Rocks was inducted into the Eight Wonders of Kansas hall of fame by the Kansas Sampler Foundation.
Aaron Makinen/Alltrails
You can only visit Chalk Pyramids during the day. Since it’s on private property, it’s crucial to adhere to the rules.
Jason McDonald/Alltrails
Visiting the site after dark is prohibited. Flying drones, digging, and carving into the rocks are also strictly prohibited. You have to be careful not to do anything to harm the rocks. It’s also important to refrain from littering; if you can, pick any trash lying around.

We can assure you that the formations are incredible, a true wonder of beauty in the open plains. At sunrise, they’re even more spectacular as the sun hits rocks. But please remember to adhere to the rules and read the signs to keep Chalk Pyramids open to the public.

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Chalk Pyramids, Lewis, KS 67748, USA