Add your Organization to OuterSpatial. Learn more here.

Downtown Geology Tour



  • Directions

  • Distance

    1-to-2 hour walking tour



By Paul Edison-Lahm, Geological Society of the Oregon Country

Come find billion-year-old building stones and fossils hidden in plain view. This is a one-to-two hour outdoor walking tour of downtown Portland’s geological mysteries and oddities. Bring a magnifying lens if you have one.

This Daycation gives you a taste of the geologic wonders of downtown with five featured stops. If you're looking for even more locations to check out, you'll find a complete guide in PDF format at:

The tour starts at Pioneer Square Mall, so a great way to arrive at this Daycation is via MAX train.