La piste des mystères des OVNI

The UFO Mysteries Trail is a mobile adventure tracing the 1947 Maury Island Incident, one of America’s earliest UFO sightings. Starting in Seattle Southside, visit key locations from Des Moines to Maury Island where this eerie event unfolded. 

Uncover the story of Harold Dahl’s mysterious encounter with flying discs over Puget Sound, the strange debris that fell, and the shadowy figures that followed. Explore the initial sightings, secretive investigations, and the "men in black" lore while earning prizes and discovering the region's rich history, scenic beauty, and local legends.

Get Your UFO Trail Pass

Whether you're a skeptic, a believer, or just curious, the UFO Mysteries Trail offers a unique mix of history, mystery, and adventure.

We recommend visiting the locations in the order they are set up on the Trail to get the most out of your experience.*

*While participating is free, some locations on the Trail are only accessible by ferry boat, which has a fee. It is possible to earn prizes without riding the ferry, but we highly recommend it if you are able! The final location is not handicapped accessible and is not required to earn prizes.

Note that details about locations are subject to change. When visiting businesses, check the operating hours online before your visit.

Earn prizes as you explore the Trail

Visit eight locations on the Trail to earn a toy bait cow and start luring Aliens back to Seattle Southside.

After visiting eight locations, you will be entered to win one of three six-armed Alien t-shirt souvenirs.

UFO Mysteries Trail Prizes

Cow Plushy

Visit seven locations on the Trail to earn a toy bait cow and start luring Aliens back to Seattle Southside.

Alien t‑shirt

After visiting seven locations you will be entered to win one of three six-armed Alien t-shirt souvenirs.