Want to do a trip on your own schedule? Have a specific area or subject your group would like to learn about? Need to have a group trip planned and provided? Terranes offers these services.  We have led day trips for The Nature Conservancy, Sierra Club, and many other groups.  We are also happy to recommend or provide a speaker for talks on subjects including regional geology, earthquakes, climate change, geologic history, evolution, and rocks.  We do not plan or offer custom fossil-collecting trips.