Part of the FREE FMTP Urban Nature Series, 2 pm–4 pm - Why there are RIVER ROCKS at the top of Mt Tabor, a volcano? Portland is one of only three cities in the United States that has a volcano within its city limits. Do you worry that it might come back to life? Find out the answers to these and other questions you and others may have when we talk about the geological features of Mt Tabor Park. Register here.