A "large boulder the size of a large boulder" tumbled onto Highway 145 in southwest Colorado, prompting a partial closure on Friday. 

A safety closure remains in effect for southbound lanes of Highway 145 due to the massive boulder, which is located at mile marker 28 in the Stoner Creek area of Montezuma County, just north of Cortez.

The San Miguel Sheriff’s Office tweeted a photograph of the boulder blocking the southbound lanes of the highway, referring to the rock as "a large boulder the size of a large boulder." This odd caption is likely paying homage to a similar incident that occurred in January of 2020. In that case, the San Miguel Sheriff's Office tweeted out that "a large boulder the size of a small boulder" had come crashing down and the phrase went hugely viral on Twitter, inspiring a number of memes and celebrity posts.

Motorists should expect alternating traffic and delays, according to the Colorado Department of Transportation.

It's unclear at this time what caused the boulder to come crashing down onto the highway. Weather events, such as rain and melting snow, can certainly be a trigger for rock slides. An estimated time for reopening the lanes has not been released.

Highway 145, which runs between Cortez and Telluride, is no stranger to rockslides.

In 2019, a 8.5-million pound boulder fell onto the road and the decision was made not to remove it due to costs. Instead, the road was re-routed and the boulder became one of the state's newest landmarks, dubbed as “Memorial Rock.” 

Editor's Note: All closures are subject to change. Check CDOT’s Facebook, Twitter (@coloradodot) or  cotrip.org for closures and delays on highways and roads across Colorado.

Breanna Sneeringer writes about news, adventure, and more for OutThere Colorado as a Digital Content Producer. She is an avid adventure seeker and wildflower enthusiast. Breanna joined OutThere Colorado in September 2018.


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(5) comments


"It's unclear at this time what caused the boulder to come crashing down onto the highway."

My money's on gravity.


"A large boulder the size of a large boulder"... honestly, does no one hear the crazy in this description? Glad for no injuries. Yep, be alert people.


I have a question for Ms. Sneeringer, how big is a boulder, that is as big as boulder? I didn't know, that she gratuated from the Journalist School of hard knocks.


Glad no one was hurt, and fun reporting.


I will always love Colorado but it can be a very dangerous place up in those mountains.

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