Born in France, in the Paris region, my career as an alpine ski coach brought me to Park City, Utah, in 2006. This opportunity allowed me to explore the American West, from Salt Lake City and Denver to the Pacific coast. This journey profoundly transformed my perception of nature, revealing its raw power, while also deepening my understanding of the fascinating history of the American West—its Gold Rush and the complexities of the United States as a nation.

I’ve since developed what I now call the "historico-geological logic" of the territories, a concept I refine through discoveries and the stories I share. In 2019, I founded my own company, Les Mystères de l’Ouest Colorado LLC. Without the irresistible call of the West—with its deserts, mountains, and canyons, so powerful and moving—none of this would have come to life.

Each tour I design offers a unique experience tailored to my clients' interests, whether they are passionate about geology, history, or simply curious to discover the natural wonders of the American West. Drawing on my in-depth knowledge of the regions we explore, I provide an authentic and captivating immersion far from standard tourist routes.

With over 15 years of experience in alpine and desert environments, I ensure that every adventure is not only unforgettable but also safe, paying close attention to terrain conditions and logistical needs. As a resident of Colorado, I take clients off the beaten path to discover ghost towns, rich in forgotten history, and breathtaking landscapes.

Passionate about protecting the lands we explore, I also strive to adopt an environmentally respectful approach. My tours minimize human impact and raise awareness about the fragility of local ecosystems.

Today, I am based in the heart of the Rockies, in Durango, Colorado, at the gateway to the vast deserts of Utah and New Mexico.

"The Wild West is not just a land to conquer, but a story to hear, a silence to respect, and landscapes to behold."

Thierry Colas
Les Mystères de l’Ouest Colorado LLC