Monument Rocks AKA Chalk Pyramids

Visited on: Thursday, June 20, 2024
Cost: Free

Imagine being a gold prospector in the 1880s on your way to Pikes Peak, Colorado, on the Smoky Hills Trail. You’re hungry. You’re tired. You’re wondering whether or not you’re really on the right path.

Then, in the distance arising from the Kansas plains, rock formations called Monument Rocks or the Chalk Pyramids appear, letting you know you’re moving in the right direction. 

A grassland with a clear blue sky, scattered with large sandstone rock formations in the distance, much like the striking Monument Rocks on the Kansas Plains.

I knew my Jeep teardrop trailer would be absolutely layered inside and out with dust after driving 13 miles on dusty dirt roads. but what a sight when I saw monument rocks rising in the distance.

A vast, open desert landscape with large rock formations akin to Monument Rocks under a clear blue sky. Two vehicles are parked near the base of the rocks, reminiscent of scenes from the Kansas Plains.

I spent some time just wandering around, snapping pictures of these unusual rock formations in the most unexpected place.

Monument Rocks rise majestically with their eroded surfaces against a clear blue sky, surrounded by the rocky terrain and sparse vegetation typical of the Kansas Plains.
Tall, layered rock formation known as Monument Rocks rises against a clear blue sky, with rugged terrain at its base and the vast Kansas Plains stretching to a distant horizon.

Geological History of Monument Rocks

Monument Rocks, also known as the Chalk Pyramids, are a series of large chalk formations in Gove County, Kansas. These formations rise up to 70 feet and are composed primarily of Niobrara Chalk, which dates back to the Cretaceous Period, approximately 80 million years ago. During this time, the area was covered by the Western Interior Seaway, a vast inland sea that split North America into two landmasses. The chalk is primarily composed of the skeletal remains of microscopic marine organisms, such as coccolithophores and foraminifera, which settled on the sea floor and compacted over millions of years.

Over time, the seaway receded, and the exposed chalk was subject to weathering and erosion, which sculpted the dramatic formations seen today. The rocks have unique shapes, including arches and spires, and are a significant paleontological site containing numerous fossils of ancient marine creatures.

Monument Rocks rise majestically with their eroded surfaces against a clear blue sky, surrounded by the rocky terrain and sparse vegetation typical of the Kansas Plains.
A natural rock formation with towering beige cliffs and a large arch rising from the sandy, flat terrain of the Kansas Plains under a clear blue sky.
Large sandstone rock formations, known as Monument Rocks, stand isolated in a flat, arid landscape of the Kansas Plains under a clear blue sky with a few scattered clouds. A vehicle is parked in the background for scale.
A tall, sandstone rock formation stands in the flat, arid landscape of the Kansas Plains under a blue sky with scattered clouds. Sparse vegetation covers the ground, highlighting the majestic Monument Rocks.
A natural limestone formation with an arch-shaped opening, Monument Rocks rises majestically in the Kansas Plains under a clear blue sky.

History of the Smoky Hills Trail

The Smoky Hills Trail, also known as the Smoky Hill Trail, was a significant route for pioneers and settlers in the mid-19th century. It was established during the Pike’s Peak Gold Rush in 1859, serving as a direct route from Leavenworth and Atchison, Kansas, to the goldfields of Colorado. The trail followed the Smoky Hill River and passed through the region now known for Monument Rocks.

The trail was one of the most challenging and dangerous routes due to its lack of water sources, hostile encounters with Native American tribes, and rough terrain. Despite these hardships, it became a critical path for settlers moving westward. Stagecoaches, freight wagons, and later, the Butterfield Overland Despatch (BOD) utilized the trail. The BOD was a stage line and freighting company that operated along the trail, providing mail and passenger service.

Many travelers would be happy to see the Chalk Pyramids as they came to the Monument Station on their way to Colorado.

Large rock formations known as Monument Rocks stand against a clear blue sky, with patches of green vegetation dotting the dry, sandy ground in the foreground, evoking the rugged beauty of the Kansas Plains.
A towering rock formation known as Monument Rocks, with distinct horizontal layers, stands against a deep blue sky with a single small cloud, rising majestically from the Kansas Plains.
Two tall limestone rock formations known as Monument Rocks stand against a clear blue sky in the vast expanse of the Kansas Plains desert landscape.
The image shows large, eroded limestone rock formations under a clear blue sky with minimal vegetation in the area, reminiscent of the Monument Rocks in Kansas that rise majestically from the plains.
Large rock formations, reminiscent of Monument Rocks, rise from a dry, barren landscape under a clear blue sky. Sparse vegetation dots the light-colored terrain, much like the Kansas Plains.
Image of large limestone rock formations under a clear blue sky in the Kansas Plains, resembling Monument Rocks in a desert-like landscape.
A vertical view of a beige and light brown rock cliff against a clear blue sky, reminiscent of Monument Rocks on the Kansas Plains. The cliff features horizontal layering and erosion patterns.
A black Jeep with a small teardrop trailer parked on a dirt road next to Monument Rocks, standing tall under the clear blue sky of the Kansas Plains.

The Railroad Changed Everything

The advent of the railroad significantly impacted the region surrounding Monument Rocks. The Kansas Pacific Railway, later part of the Union Pacific Railroad, was constructed through Kansas in the late 1860s and early 1870s. The railroad followed a route parallel to the Smoky Hills Trail, providing a more reliable and faster means of transportation for goods and people.

The arrival of the railroad diminished the use of the Smoky Hills Trail, as settlers and freight could now travel more efficiently by train. Towns and settlements grew along the railroad, contributing to the region’s development and economic growth. The railroad also facilitated the agricultural development of the area, allowing farmers to transport their products to broader markets.

As I drove away from Monument Rocks, I found one of the last markers of the Butterfield Overland Despatch (BOD). I stopped and snapped a couple of pics of the marker and the road leading back to the Chalk Pyramids.

A stone marker labeled "BOC 1861" stands within a rusty metal frame in a grassy field under the clear blue sky of the Kansas Plains.
A weathered stone marker with engraved text partially obscured by shadows and the Kansas Plains' grass and dirt.
A straight gravel road stretches through the vast Kansas Plains under a clear blue sky, leading to the distant Monument Rocks.

Today, Monument Rocks is a historical and geological landmark that attracts visitors who appreciate its natural beauty and significance. Although the formations are on private land, they are accessible to the public for viewing and exploration.

Information panel for Monument Rocks, also known as Chalk Pyramids, detailing its history and geological significance on the Kansas Plains. Features historical photos, maps, and QR codes for further information.
A rules sign at Monument Rocks in the Kansas Plains details site regulations and historical information. The notice includes photos from the past and a small map showing the location and proximity to nearby towns.
Journal Entry filed under: