Consultants in Science Education

Ventures trips with the
Museum of Northern Arizona
Covid protocol is still in effect, participants
must provide their own transportation

Petrified Forest
Saturday Oct. 22 10 AM to 5 PM

To reserve a slot call 928-774-5211, ext. 219

Now online:

The Four-Legged Astronomer:
An Essay Celebrating the Night Sky
Stromboli,  Aeolian Islands

Dr. Colbath is currently available for classroom presentations, lectures, tours of the geology near Flagstaff, and teacher training (including the new national science standards).  Please contact us for prices and scheduling information.

Are you a teacher needing extra images for lectures or exam material? The images in our photo galleries are a free download for educational purposes. The Conqueror Bristleworm Press is our publishing arm (science fiction, with some children's lit in the works), while science and nature themed gifts can be found on the Conqueror Bristleworm on-line store hosted by Zazzle.



GKC Geoscience LLC provides a wide range of products and services promoting science education and celebrating nature.  Special projects are developed on a contract basis, and on-line sales channeled through existing retailers.  Professional services are offered under the GKC Geoscience moniker, while retail products are marketed under the Conqueror Bristleworm (TM) brand.

Images posted on our website may be downloaded for free and used for educational purposes (with proper attribution); or licensed for commercial purposes.

GKC Geoscience LLC is a proud sponsor of the CocoNuts, the Coconino High School Robotics Team.  Go Nuts!




Feel free to contact us with questions or comments, or to request more information about our services

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