Guided Geology Tours in Colorado's Rocky Mountains

 Private Geology Tours of the Pikes Peak Region
Garden of the Gods Geology Hikes
Junior Geologist Summer Day Camp
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Take a hike with an expert in Colorado's geologic history!

The Pikes Peak region is world renowned for its spectacular geology. Join us to discover the story behind these amazing landscapes that were once proposed for a National Park.

We offer a variety of hikes from 1.5 hrs to full day adventures! Our hikes are suitable for any level of geology expertise!

Your Guide

Eric Billmeyer

Eric is an award winning  instructor of geology and physical geography with over 15 years of teaching experience at the university level. Eric has led field courses throughout Colorado, Utah, and Ireland and is excited to share his knowledge with you as we explore Colorado's amazing geology!

Investigating metamorphic rocks (metaquartzites) along Diamond Hill, Ireland

Plaster jacketing dinosaur bone at the Nail Quarry, Como Bluffs, WY

July 3, 2022

We highly recommend taking a guided tour with Trail Gems Geology Tours. Our family loved our geological tour through Garden of the Gods! We were all amazed with not only the beautiful views on our hike but the abundance of information and knowledge shared with us. We would have missed seeing the coolest things if we had walked the trail on our own. I think our favorite part was seeing the fossils. The mid-hike snacks were much appreciated too! Thank you again Eric for a fun, memorable morning during our vacation in Colorado! Wish we could have you in our back pocket on all of our hikes 🙂


July 11, 2022

“Trail Gem Geology Tours was fantastic! The Garden of the Gods park is already beautiful, but the geology tour is a definite recommend. From the beginning to the end, it was like walking through millions of years of history over a two hour hike, and let me tell you, it didn’t feel like two hours at all. The structure of the hike going through the different geological time periods, stopping to look at different formations and how and when they were formed, and seeing local minerals and fossils were all highlights. His professorship showed as it felt like a really entertaining geology class wrapped in a scenic hike. The stops along the hike were also well timed to get snacks and water and shade, and also highlighted different minerals, rocks, or formations so the stops were restful, but never boring. I’d do this hike again and again. Very well done.”



At Trail Gems we believe everyone should have the chance to discover the beauty and rich geologic history on display throughout Colorado. Our experienced guides are very knowledgeable about the regional geology and are passionate educators.  Book a trip with us and let us take care of you on an amazing geology adventure!