Chris Pattison joins the podcast to talk about the "Friend's of Sutro Tunnel" non-profit organization, helping to preserve and maintain an historical site that includes a 4 mile tunnel!
Email: northpeakadventures@gmail.com
Donations: https://PayPal.Me/underlanders
Instagram: https://www.instagram.com/northpeakadventures
https://www.dirtyminerapparel.com Code/underlanders 10% off
https://www.rockytalkies.com Code/northpeakadventurespodcast-10
Sutro Tunnel: http://thesutrotunnel.org/
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