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Downtown PDX Building Stone Geology Tour

  • Mark Hatfield Federal Courthouse 1000 SW 3rd Ave Portland, OR, 97204 United States (map)

Ancient Walls South Tour: A Geological Walking Tour of Downtown Portland Building Stone

Sorry this tour is sold out. Stay tuned for our October tour.

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. 

Bring good walking shoes and sunscreen. Water and snacks are advisable. Bathroom access is limited downtown during the weekend. Open to public. Children under 12 must be supervised. 

Refunds are available in the event of illness or emergency.

We will meet at the main entrance of the Hatfield Federal Courthouse (1000 SW 3rd).