The Mystery of the West Arm: Uncovering the Hidden History of Power Island
The Mystery of the West Arm: Uncovering the Hidden History of Power Island
In the emerald expanse of Grand Traverse Bay’s West Arm, about six miles north of Traverse City, lies a 200-acre sanctuary that feels less like a park and more like a geographic bookmark. Accessible only by boat, Power Island remains a roadless, primitive redoubt—a silent witness to the layers of Michigan history that the mainland has long since overwritten. While the shoreline hums with the modern leisure of summer boaters, the island’s interior ridges and submerged surrounding reefs hold the secrets of ancient hunters, industrial titans, and a hermit who once fought a losing battle against the encroaching world.
To step onto these shores is to step into a time capsule. For those who wish to see the rugged terrain and the “ghosts” of the bay firsthand, our companion video tour provides a visual deep dive into the trails and the hidden corners of the shoreline. But to truly understand Power Island, one must look beneath the surface—both of the water and the historical record.
Paleolandscapes: The Bay Before the Water
The story of Power Island does not begin with a deed, but with the retreat of the ice. Approximately 10,000 years ago, as the glaciers receded, the Great Lakes underwent radical transformations. During the “Chippewa low stage,” water levels were significantly lower than they are today, reconfiguring the geography of Grand Traverse Bay into a traversable landscape.
This ancient reality is at the heart of the “Underwater Stonehenge” narrative that occasionally surfaces in sensationalist media. While the “Stonehenge” label is largely dismissed by serious researchers as clickbait, the underlying archaeology is profound. Dr. Mark Holley and other researchers have identified stone alignments beneath the bay that mirror verified 9,000-year-old hunting structures found on the Alpena-Amberley Ridge in Lake Huron. These are not mystical monuments, but evidence of a sophisticated ancient culture navigating a landscape that is now submerged. For the Anishinaabek peoples, whose presence in Michigan dates back 13,000 years, these sites represent a deep, ancestral connection to a “homeland” that once existed where the fish now swim.
What the Records Actually Show: A Chronology of Identity
As the era of recorded history began, the island’s identity shifted through a series of names, each reflecting the strategic and social priorities of the time. The “chain of title” is more than a legal ledger; it is the skeleton of the island’s story.
| Year | Documented Name | Context & Significance |
|---|---|---|
| 1866 | Harbor Island | Identified in regional reports for its role in sheltering Bowers Harbor. |
| Late 19th C. | Marion Island | A name used during the private ownership era and cited in the 1975 acquisition. |
| Early 20th C. | Hog Island / Ford Island | Gritty local nicknames; “Hog” reflecting early livestock use and “Ford” the celebrity era. |
| 1986 | Power Island | Officially renamed via county resolution to honor the Power family’s conservation legacy. |
The modern preservation of the island is a minor miracle. In 1975, facing the threat of a subdivided cottage development, The Nature Conservancy—bolstered by the Power family and federal grants—purchased the island (then still commonly known as Marion Island). It was subsequently gifted to Grand Traverse County with a conservation easement, ensuring its transition from a private playground to a public “quiet preserve.”
The Ford Era: Facts, Folklore, and a Cold Case
No chapter of the island’s history carries more mystique than the years 1917 to 1944, when the name on the deed belonged to Henry Ford. Celebrity ownership often acts as a magnet for folklore, and the “Ford Island” era is no exception.
We know for a fact that Ford purchased the island in 1917; a 1919 column in the Record Patriot remarks that the island had “recently been acquired” by the industrialist. It served as a private retreat for the Ford family, away from the prying eyes of the Detroit press. However, the guest list of this retreat remains a subject of intense local debate. While legends claim that Thomas Edison, Harvey Firestone, Babe Ruth, and even three U.S. Presidents visited the island, primary documentation—diaries or security logs—has yet to emerge to move these claims from “plausible” to “verified.”
Even the end of the Ford era is shrouded in a minor archival mystery. While the sale occurred in 1944, secondary sources are at odds over the buyer. Some local timelines point to the Parts Manufacturing Company, while other narratives suggest the Rennie Oil Company (or the Rennie family) took the keys. Resolving this discrepancy remains a “cold case” for local researchers to solve in the dusty corners of the county’s Register of Deeds.
The Bassett Island Thread: From Hermits to High Society
Just north of Power Island, often connected by a low-water isthmus, lies Bassett Island. Its history provides a sharp contrast to the quiet nature preserve we see today. In the late 19th century, this was the domain of Dick Bassett, a homesteader who lived a life of fishing and gardening. Bassett’s desire for solitude was legendary; he famously expressed his irritation with “inquisitive visitors” in correspondence with the Michigan Tradesman editor, signaling an early tension between the island's mystique and the public’s curiosity.
By 1906, however, the solitude was shattered. Bassett Island entered a surprising “party island” phase, hosting a two-story dance pavilion. Steamships would ferry excursionists from the mainland for late-night dancing over the water. It was a brief, vivid chapter of social spectacle that eventually faded, leaving the island to return to the brush and the birds.
The Modern Explorer’s Guide
Today, the management of Power and Bassett Islands is a masterclass in “primitive” park standards. By intentionally limiting infrastructure, Grand Traverse County preserves the very isolation that defines the experience.
- Access: Strictly boat-only. There are no roads, and motorized vehicles are prohibited.
- The “Pilgrimage”: For the geocaching community, the island is hallowed ground. It is home to GC35, hidden on July 16, 2000—one of the oldest active caches in Michigan.
- Rustic Life: There are 15 primitive campsites (10 on Power Island, 5 on Bassett). Visitors must bring their own water and strictly adhere to “pack-in/pack-out” ethics.
- Amenities: Vault toilets and a picnic area are available near the dock, but the true draw is the miles of interior ridge loops and perimeter trails.
Unresolved Mysteries: Leads for the Researcher
For those who feel the pull of the archives as strongly as the pull of the lake, several questions remain open:
- The 1944 Deed: Who was the immediate successor to Ford? Resolving the Parts Manufacturing vs. Rennie Oil conflict is the next step in the island's chronology.
- The Guest Book: Do the Ford archives in Dearborn hold any primary evidence of those rumored presidential visits?
- The “Gull Island” Connection: Bellow Island, located near Northport, is often co-mentioned in ecological studies as a gull nesting site. Clarifying its relationship to the naming history of the West Arm islands remains a research priority.
- Archaeological Ethics: How can we better document the “stone alignments” while respecting the cultural sensitivities and restricted-site protocols of the Grand Traverse Band and state authorities?
The story of Power Island is a template for successful heritage management—a place where the ecological value of a roadless sanctuary is held in balance with a human history that spans 13,000 years. It remains a quiet preserve in a loud world, waiting for those willing to row, paddle, or sail into its past.
Watch, Listen, and Follow Deep Dive AI
History is best explored firsthand. To see the rugged beauty of the West Arm and hear more about the “Underwater Stonehenge” research, watch our full YouTube deep dive, then follow along for more Michigan history, overlooked places, and quietly fascinating stories hiding in plain sight.
Disclosure: Some links below are affiliate links. If you buy through them, it helps support Deep Dive AI at no extra cost to you.
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SEO & Social Metadata
- Primary Headline: The Secret History of Power Island: Henry Ford, Ancient Shorelines, and Grand Traverse Bay
- Alternate Headline (Curiosity): From Hermits to Henry Ford: The Untold Mystery of the West Arm
- Alternate Headline (Descriptive): A Guide to Power Island: Ancient Archaeology and the Ford Legacy
- YouTube Title: Exploring Power Island: Henry Ford’s Retreat and the Underwater “Stonehenge”
- Social Teaser 1: “Islands act as geographic bookmarks, preserving the layers of history that the mainland often overwrites.”
- Social Teaser 2: “While the media calls it ‘Underwater Stonehenge,’ the reality of the bay's 9,000-year-old hunting structures is even more fascinating.”
- Social Teaser 3: “From 19th-century hermits to a two-story dance pavilion, Bassett Island has seen it all.”
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