K-T Boundary

Welcome to the K-T Boundary – Trinidad, Colorado

Step back in time and discover one of the most significant geological landmarks in the world—the K-T Boundary, located just outside Trinidad, Colorado. This site marks the boundary between two of Earth’s most important geological periods: the Cretaceous and Tertiary periods. It’s here that the world-changing mass extinction event occurred 66 million years ago, forever altering the course of life on Earth. Visit the K-T Boundary and immerse yourself in the science, history, and mystery that surrounds this extraordinary location.

Why Visit the K-T Boundary?

Witness a Landmark of Evolution: Stand at the very spot where one of Earth’s greatest extinction events took place and see the physical evidence of the drastic shift in life that followed.
Explore Fossils and Geology: The K-T Boundary in Trinidad is rich in fossils and geological layers that date back millions of years. Fossils of dinosaurs, prehistoric plants, and marine life can be found in the area, offering a glimpse into life before and after the catastrophic event.
Learn About the Extinction Event: The K-T Boundary is the ideal place to learn about the mass extinction that marked the end of the dinosaurs and the rise of mammals. Educational signage and interpretive displays provide insight into the science behind the event, the asteroid impact, and its global effects on climate, biodiversity, and life on Earth.

Things to do at the K-T Boundary

Guided Tours and Interpretive Programs: Take a guided tour with local experts to learn more about the geological and paleontological significance of the K-T Boundary. Many tours focus on the science behind the extinction event, fossil hunting, and the recovery of life post-extinction.
Fossil Hunting: If you’re a fossil enthusiast, the area around the K-T Boundary is an excellent place for amateur fossil hunting. You may find fossilized remains of ancient plants and animals, offering a glimpse into the creatures that roamed the Earth during the Cretaceous and early Tertiary periods.
Photography & Scenic Views: The K-T Boundary offers dramatic views of the surrounding landscape, with vast plains and distant mountains providing a striking contrast to the historical significance of the site. Bring your camera to capture the natural beauty of this extraordinary location.
Visit Local Museums and Visitor Centers: Stop by local museums and visitor centers in Trinidad to see exhibits about the K-T Boundary, its fossils, and the impact of the extinction event. The Trinidad History Museum and the Southern Colorado Museum of History offer detailed displays about the region’s ancient past.