An EarthCache™ is a location-based geoscience experience that brings you face-to-face with a remarkable geological feature. Instead of finding a physical container, you visit a real-world location, observe the geology around you, and complete activities that help you understand the site.
Created and maintained by the geoscience community, EarthCaches bring geology out of the classroom and into the field—making it accessible to anyone curious about the Earth.
1. Create a Geocaching® account
Create an account at geocaching.com if you don't already have one.
2. Find an EarthCache™
Use the direct links below or find your own by using the Geocaching® app or website to search for EarthCaches near Denver or your destination. Make sure to add "EarthCache" under "Filter" when searching.
3. Visit the location
Head to the EarthCache and complete the activities and observations described on its page.
4. Log your experience
Share what you discovered and add your photos to your EarthCache log.
5. Share your adventure
Post your EarthCache experience on social media and tag GSA. Use #GSAEarthCache for a chance to be featured on GSA's social media pages.
Discover the geology hiding in plain sight throughout the city.
City Park | Denver
Visit the Denver Museum of Nature & Science to explore Colorado's official state fossil, Stegosaurus, and learn more about how fossils formed and were uncovered in Colorado.
Cheesman Park | Denver
Discover Colorado's iconic Yule Marble at Cheesman Park Pavilion and learn how this remarkable stone became a favorite material for monuments and historic buildings.
Downtown Denver
Look up, down, and all around on a self-guided walking tour of downtown Denver. Discover granite, sandstone, marble, limestone, and other stones that have shaped the city's architecture.
Colorado State Capitol | Denver
Visit the Colorado State Capitol to see rare Colorado Rose Onyx and brilliant Yule Marble while exploring the state's geologic heritage through its architecture.
Ready to explore a little farther? These EarthCaches take you into Colorado's Front Range and beyond.
Colorado School of Mines | Golden
Follow a self-guided geology trail featuring dinosaur tracks, fossils, mining history, and Colorado's diverse rock formations.
Dinosaur Ridge | Morrison
Head to Dinosaur Ridge and investigate a fascinating geologic feature while exploring one of Colorado's most recognizable fossil sites.
Red Rocks | Morrison
Explore the dramatic geology of Red Rocks and Ship Rock while learning about the ancient Ancestral Rockies and the rocks that record their history.
South Valley Park | Littleton
Hike through South Valley Park and discover dramatic flatirons while exploring nearly 200 million years of Colorado's geologic history.
