Portland, Oregon is known for keeping it weird. Maybe these tunnels just help maintain that image? Weird and spooky stuff happened in these tunnels. Kinda shady, kinda cool. Still spooky tho.

https://theghostinmymachine.com/2019/07/29/haunted- road-trip-nina-the-mournful-ghost-of-portland-oregons- old-town-pizza-brewery-shanghai-tunnels-underground/

https://www.onlyinyourstate.com/oregon/shanghai- tunnels-or/

https://archive.nytimes.com/www.nytimes.com/fodors/ top/features/travel/destinations/unitedstates/oregon/ portland/fdrs_feat_121_5.html? n=Top%252FFeatures%252FTravel%252FDestinations% 252FUnited+States%252FOregon%252FPortland

https://www.oregonencyclopedia.org/articles/ shanghai_tunnels_myth/#.YRGPq5NKj6M

https://www.oregonlive.com/portland/2017/01/ the_truth_about_portlands_shan.html

https://portlandghosts.com/the-shanghai-tunnels/

https://www.travelportland.com/attractions/portland- shanghai-tunnels/