Gero Island
🏆 Chesuncook Island — 3,200-acre island in Chesuncook Lake — one of the largest lake islands in the eastern US
Gero Island is a 3,200-acre island in Chesuncook Lake — one of the largest lake islands in the eastern United States. The island sits in the heart of Maine’s North Woods, accessible only by boat. Chesuncook Lake was the setting for Henry David Thoreau’s 1853 canoe expedition, described in “The Maine Woods.” Thoreau wrote that Chesuncook was “more grim and wild than you had anticipated — a damp and intricate wilderness.” The island remains virtually unchanged since Thoreau’s visit — boreal forest, moose, and absolute solitude.
Visitor Information
| Detail | Information |
|---|---|
| Location | Chesuncook Lake, Piscataquis, ME |
| Size | 3,200 acres! |
| Entry Fee | Free (boat access only) |
| Literature | Thoreau’s “The Maine Woods” (1853)! |
About Gero Island
Gero Island is a public reserved land on Chesuncook Lake — one of the largest and wildest lakes in Maine’s North Woods. The island is part of the vast Thoreau Country — Henry David Thoreau canoed Chesuncook Lake during his famous 1853 Maine Woods journey. The surrounding landscape has changed little since Thoreau’s visit.
Things to Do
Primitive camping on the island, canoeing Chesuncook Lake (following Thoreau’s route), fishing for lake trout and brook trout, moose watching (the lake shore is prime moose habitat), and stargazing in total wilderness darkness.
Insider Tips
Chesuncook Lake: Gero Island sits in Chesuncook Lake — one of Maine’s most remote wilderness lakes. Pro tip: Henry David Thoreau explored Chesuncook Lake in 1853 — his account in “The Maine Woods” describes a landscape largely unchanged today. Floatplane access: Many of Maine’s remote lakes are accessible only by floatplane or long canoe trips — the floatplane culture is unique to northern Maine.
Best Time to Visit
Summer: Canoe camping and fishing. Fall: Remote foliage — solitude guaranteed. Winter: Ice fishing in true wilderness. Spring: Loon calling season.
Frequently Asked Questions
What did Thoreau write about Maine?
Thoreau visited Maine three times (1846, 1853, 1857) — his accounts were published posthumously as “The Maine Woods.” Unlike Walden’s domesticated nature, Maine showed Thoreau genuinely wild nature — vast, indifferent, and humbling. His ascent of Katahdin left him shaken by nature’s raw power. “The Maine Woods” influenced the conservation movement and remains one of the best accounts of North American wilderness.
Make it a road trip: Pair a visit with Telos (a short drive away) or Chamberlain Lake (a short drive away).
Wildlife & Nature
Gero Island — a 3,300-acre island in Chesuncook Lake — one of the largest lake islands in Maine. The island’s old-growth spruce-fir forest, rocky shores, and coves support moose, loons, bald eagles, and black bears. Henry David Thoreau paddled past on his 1853 Maine Woods expedition.
Nearby Attractions
Chesuncook Lake — surrounding. Chesuncook Village — one of the most remote villages in the eastern US. Baxter SP — 20 miles east.
🐾 Dogs & Pets at Gero Island
- Pets allowed? statewide rule
- Pets are allowed at most Maine state parks year-round, including trails, but must be leashed, under the handler's physical control and never left unattended.
- Leash rule statewide rule
- Leash not exceeding 4 feet, under the physical control of the handler
- Beaches & swim areas statewide rule
- Pets are not allowed on state park beaches April 1 through September 30; leashed pets are welcome on beaches October 1 through March 31
- Statewide exceptions statewide rule
- No pets allowed at Sebago Lake State Park campground; park staff may assign pet owners to less congested camping areas
Are dogs allowed at Gero Island?
Pets are allowed at most Maine state parks year-round, including trails, but must be leashed, under the handler's physical control and never left unattended. Individual parks can post stricter rules — check signage on arrival.
Rules verified July 2026 via maine.gov. More: Maine state parks guide · Dog rules in all 50 states compared
Park Location
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