UFO Mysteries Trail

Relive the Maury Island UFO incident Near Seattle Washington

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

Seattle Area UFO History & Mystery

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.

UFO Mysteries Trail FAQs: Exploring the Maury Island UFO Incident

What is the UFO Mysteries Trail in Seattle Southside?

The UFO Mysteries Trail is a free mobile adventure in Seattle Southside that explores the 1947 Maury Island Incident—one of the earliest reported UFO sightings in the United States. Participants visit real locations connected to the mystery and check in using their phone to earn prizes.

What was the 1947 Maury Island UFO Incident?

The Maury Island Incident occurred in 1947 when a harbor patrolman named Harold Dahl reported seeing flying discs over Puget Sound near Maury Island. Debris allegedly fell from the objects, sparking investigations, rumors of “men in black,” and one of America’s earliest UFO legends.

How does the UFO Mysteries Trail work?

Participants sign up for a free mobile trail pass delivered by text and email. The pass guides visitors to key locations from Des Moines to Maury Island. At each stop, users check in with their phone’s location services to progress and earn prizes.

Do you need an app to participate in the UFO Mysteries Trail?

No app is required. The trail pass is delivered directly to your phone via text and email and can be saved to your home screen for easy access while exploring Seattle Southside.

What prizes can you earn on the UFO Mysteries Trail?

Visitors who check in at trail locations can earn prizes such as a toy bait cow plush and entries to win a six-armed alien T-shirt. Prizes are awarded as participants complete locations along the trail.