Discovering Star Island: The Lake Within a Lake

In the heart of northern Minnesota’s Chippewa National Forest, Cass Lake stretches across more than 15,500 acres of clear water, part of a chain of lakes linked to the Mississippi River system. Rising from its center is Star Island—the largest of the lake’s four islands—a roughly star-shaped landmass of about 980 acres with more than eight miles of shoreline. Named by the Ojibwe for its distinctive shape, the island is a rare blend of federal, tribal, and private land. The U.S. Forest Service manages more than three-fourths of it for public scenic and recreational use, while historic private cottages occupy portions of the remainder. No roads or bridges reach the island; the only way in is by boat or canoe. What makes Star Island unforgettable, however, is the body of water it contains: Lake Windigo, a spring-fed lake sitting inside an island that itself sits inside a river-fed lake.

Aerial view of Star Island and Lake Windigo.
Source: ArcGIS StoryMaps

Introduction: The Unique Geography of Star Island

Star Island occupies a central position in Cass Lake, roughly two miles north of the town of Cass Lake. Its irregular shoreline and elevated banks create a landscape of high ground, deep woods, and sheltered coves. Because it lies within both the Chippewa National Forest and the Leech Lake Indian Reservation, land management reflects a layered history of federal protection, tribal presence, and limited private ownership.

Ownership and Land Management

The Chippewa National Forest oversees the majority of the island for public recreation, scenic preservation, and wildlife habitat. Private historic cottages, many dating to the early twentieth century, remain under individual ownership or long-term leases. Visitors are repeatedly reminded to respect private property boundaries; trails and public shorelines are clearly distinguished from cabin lots. This mixed ownership has preserved a quiet, low-density character that feels both accessible and protected.

Location within the Chippewa National Forest

Access is deliberately limited. There are no bridges, roads, or vehicle ferries. The absence of motorized land traffic keeps the island’s interior relatively quiet and its old-growth stands intact. Star Island forms part of the forest’s Ten Section Area—one of the earliest portions set aside for protection—ensuring that large-scale timber harvest never occurred here.

Lake Windigo: A Geographical Marvel

The island’s most celebrated feature is Lake Windigo, a 199-acre lake entirely contained within Star Island’s boundaries.

The “Lake Within a Lake” Phenomenon

Cass Lake is fed by rivers and connected to a broader chain of waters. Lake Windigo, by contrast, is spring-fed. The result is a nested hydrology that is both simple and remarkable: a clear, self-contained lake resting inside an island that rests inside a larger lake. Three short public portage trails connect the outer shores of Star Island to Windigo’s edge, allowing paddlers to carry canoes or kayaks across the narrow isthmuses.

Water Source and Clarity

Windigo reaches a maximum depth of about 25 feet. Its spring-fed character produces water that often appears clearer and more still than the surrounding Cass Lake. Small craft are the practical choice; larger motorboats cannot easily navigate the portages, leaving Windigo quieter and more intimate. The lake supports fishing for northern pike, walleye, and panfish, as well as swimming and quiet exploration.

Ripley’s Believe It or Not Recognition

In the 1950s, Ripley’s Believe It or Not highlighted Lake Windigo as the only spring-fed lake on an island in the middle of a river-fed lake in the Northern Hemisphere. While other “lakes within lakes” exist (most notably Lake Manitou on Manitoulin Island), Windigo’s specific combination of spring source and surrounding river-fed lake remains distinctive and continues to draw attention.

A Rich Historical Background

Human presence on Star Island stretches back millennia, layered with Indigenous settlement, early conservation, and the arrival of seasonal cabin dwellers.

Ancient Indigenous Roots and Archaeology

Archaeological evidence indicates occupation on the island approximately 5,000 years ago. Woodland peoples lived here about 1,500 years ago. Nearby mainland Paleo sites date to 7,000–8,000 years old. In the historic period the island was home to an Ojibwe village associated with Ozaawindib (Yellow Head), the guide who led Henry Schoolcraft to the source of the Mississippi at Lake Itasca in 1832. The lake’s name itself derives from the Windigo (or Wendigo) of Algonquian tradition—a powerful and cautionary spirit figure. Star Island is recognized as one of ten unique areas within the Chippewa National Forest specifically for its prehistoric and historic Indigenous occupation.

The Logging Era and Forest Protection

When surrounding forests faced intense logging pressure in the late nineteenth and early twentieth centuries, the Ten Section Area—including Star Island—was set aside early. Protection began in the era of the Minnesota National Forest (later renamed Chippewa National Forest in 1928). Old-growth pines that would have been cut elsewhere still stand, providing critical habitat and a living record of the region’s pre-industrial forest.

The Historic Cottage Era (1909 to Present)

In 1909 land became available for summer cabin development. Northern Minnesota was marketed as a healthful escape from urban heat and a curative climate for ailments such as asthma. Professionals—doctors, professors, attorneys, and businessmen from cities in Minnesota and beyond—built modest cottages that evolved into multi-generational family retreats.

The “Ten Section Area” Designation

As one of the earliest protected blocks of the national forest, the Ten Section Area limited commercial logging and shaped the island’s future as a place of recreation rather than extraction. The designation helped keep large tracts of public land intact even as limited private development occurred.

Summer Retreats for Urban Professionals

Early permit holders and lot owners sought the isolation that water access alone could provide. A summer hotel appeared by 1912, and cabin associations formed to protect the island’s character. Attempts by mainland interests to build a road or bridge were resisted, preserving the boat-only approach that still defines the experience today.

Outdoor Recreation and Wildlife

Star Island rewards visitors who arrive prepared for a self-reliant day or overnight.

Hiking Trails of Star Island

Approximately six miles of designated trails traverse high banks and deep woods. The paths offer views of both Cass Lake and, at points, Lake Windigo. Terrain ranges from gentle woodland walking to steeper bank sections; the experience is more contemplative than strenuous, ideal for nature study and quiet observation.

Lake Windigo Access and Portage Routes

Three public portages link the outer shoreline to Windigo. Most are short, making a round-trip paddle and portage feasible for canoeists and kayakers. The inner lake’s restricted access keeps motor traffic minimal and the atmosphere peaceful.

Backcountry Camping and Beach Access

A primitive campground sits on the southwest shore. Campers must bring their own water and pack out all refuse; no potable water or developed facilities are provided. Isolated shoreline beaches and undeveloped sites offer additional opportunities for day use or overnight stays under Leave No Trace principles. The combination of island isolation and public land creates a genuine backcountry feel without requiring a multi-day wilderness trek.

Bald Eagles and Old-Growth Forest Ecosystems

The island’s mature pines and limited disturbance make it excellent bald eagle habitat. Visitors frequently observe eagles soaring above the canopy or perched near the shore. The broader ecosystem supports loons, forest songbirds, and the typical suite of northern Minnesota wildlife. Because large sections have never been clear-cut, the forest structure remains relatively complex and resilient.

Planning Your Trip

Successful visits hinge on preparation and respect for the island’s constraints.

How to Get There (Boat and Canoe Access Only)

There is no road or bridge. Every visitor arrives by watercraft. Canoes, kayaks, small motorboats, and pontoons are all used; the choice depends on group size, weather, and whether Windigo is part of the plan.

Best Launch Sites (U.S. Highway 2 Wayside Rest Area)

The U.S. Highway 2 Wayside Rest Area east of the city of Cass Lake offers ample parking and a drive-down boat ramp. It is the most commonly recommended public launch for reaching Star Island. Other local resorts and public accesses around Cass Lake can also serve as starting points.

Local Equipment and Watercraft Rentals

Boat, canoe, kayak, and pontoon rentals are available through businesses and resorts in the Cass Lake area. Arranging rental and launch logistics in advance is wise, especially during peak summer weekends.

Visitor Etiquette (Respecting Private Property Boundaries)

Stay on public trails and shorelines. Private cabins and their immediate grounds are not open to the public. Practice Leave No Trace: pack out everything you bring in, minimize campfire impact, and keep noise low. The island’s mixed ownership and long human history make courtesy essential to preserving both the natural and cultural experience for everyone who follows.

Star Island rewards those who approach it on its own terms—by water, with respect for its layered past, and with eyes open to the quiet marvel of a lake within a lake. Whether the draw is a morning paddle on Windigo, a trail walk beneath old pines, or a simple night under the stars on the southwest shore, the island offers a concentrated dose of northern Minnesota’s wild character, protected and still largely unspoiled.

Discovering Star Island: The Lake Within a Lake in Minnesota