Because of the high temperatures forecast for Saturday, the starting time for this tour has been pushed up to 9:00 a.m. We will fully refund your fee if you have already registered and the new time doesn't work for you. Sorry for the inconvenience. Email Paul with questions or cancellations.
Come see billion-year-old building stones and the fossils hidden under our feet. Join us for a two-hour outdoor walking tour of downtown Portland’s geological mysteries and oddities. This tour is open to the public.
Bring potluck item, $5, and a chair to sit on! Member event.
We can't get enough of exploring Downtown Portland Building Stone! If you missed our Spring tour or just want to see more interesting buildings, join us for this two-hour walking tour of more of downtown Portland's geological mysteries and oddities. This tour is open to public.
Dedicated to Pacific Northwest Geology since 1935
The Geological Society of the Oregon Country (GSOC) is a non-profit organization based in Portland, Oregon. The society is dedicated to the study of geology in the Pacific northwest and is open to persons with all levels of education and professional backgrounds.