The Century System
A Private Label Century · Islesboro, Maine

The Dark Harbor Century

One hundred adventures on one island.
Schooners and sailboats on their moorings in Gilkey Harbor, Islesboro, the spruce shore behind
The Invitation

As you come into the Big Tree Trading Company the bell over the door rings, as it has since the day the store opened.

What you see first is the table. A long walnut table sits in the middle of the room with its chairs pulled out at odd angles, as though someone just stood up from it — maps still open, someone’s Passbook lying face down at the page they’d gotten to, a mug going cold. This is the Century Table, and it belongs to whoever needs it: to plan a day, to compare a summer, to settle pleasantly which adventure is next. It is furniture built for staying, not for browsing past.

Past the table, the room opens, and there it is — the Adventures Wheel, standing taller than everything around it, exactly where it should be: impossible to miss, impossible not to want to spin. Somebody usually is. And behind the Wheel, the Century Desk, where a stack of Passbooks waits for names that haven’t been written in them yet.

So come in. Let the door bang shut behind you. Sit at the table if you want to, spin the Wheel if you’re tempted, or just buy your paper and go — the store will be glad to have you either way, and the Century will still be here the next time you look up.

Adventure is waiting.

The place

One island. One store. One hundred things worth doing.

Islesboro is fourteen miles long and three miles across at its widest, a day’s ride from one end to the other by horse and buggy, and for twenty years no automobile was allowed on it. The Penobscot people called it the island that lies between two channels. The Dark Harbor Century is written for the whole island: the water around it, the roads across it, the light at the ferry landing, the library in the old church, the beach named for a tree that is gone.

It is issued in one place, the Big Tree Trading Company on Derby Road, where the Wheel stands, the Keeper works, and the Book of the Centurion is kept. A Passbook is a hundred reasons to come back to the island, and most of them take more than one summer.

Inside the Big Tree Trading Company: the long table with charts on it, the Wheel on the wall beyond, the shelves down both sides
The seven categories

Ninety-eight adventures on the island. Two more from the King and from you.

49 easy, 38 moderate, 11 difficult. Four carry an anchor: a player who is too young, too old, or unable to do one is signed off without doing it, and it counts.

A Dark Harbor 20 under sail on Penobscot Bay, two aboard, a squall line behind
On the Water14 adventures
Grindle Point Light and the keeper’s house at the ferry landing, Islesboro, the bay behind
On the Island15 adventures
Lupines in June with the water and a lighthouse beyond
Sport & Grounds18 adventures
Split lobsters over the coals, lemons beside them
The Table14 adventures
Three generations at cards on a rainy evening, the harbor in the window behind
Parlor & Games15 adventures
A driftwood bonfire on the beach at dusk, sparks rising, the water still behind
Evening & Fire15 adventures
The Alice L. Pendleton Memorial Library, Islesboro, in summer light
Heritage & Home7 adventures
A few of the hundred

What shall we do today?

11. Round the Island
Circumnavigate Islesboro by boat in a single day.
19. Earn Your Cone
Reach the Dark Harbor Shop under your own power and earn an ice cream — a tradition since 1920.
22. Big Tree Beach
Reach Big Tree Beach on Seal Harbor and come back knowing what the name stands for.
61. The Lobster Muster
Take part in a Lobster Muster: start with live lobsters, cook them, and eat them or put the leftover by for another adventure.
63. The Navigator's Hand
Take a sextant, a star chart, and a clear night, and work out your position the way sailors did before anything electronic could do it for them. No app, no GPS — just the horizon, a fixed star, and your own hand steady enough to read the angle.
64. The New Constellation
Set up a satellite terminal on the water and watch it find its bearings in seconds — not from one fixed star now, but from a moving sky of thousands of satellites doing, at a scale no sailor before this century could have imagined, the same essential job the stars have always done: telling you where you are, and putting you in reach of everyone else.
80. The Ghost of Rock Ledge
Hear the island's own ghost story, the one that belongs to Rock Ledge. Told in the dark.
95. The Name Before the Name
Learn the original Penobscot name for the island, learn to say it, and learn what it means.
How it is played

Choose. Do it. Get it signed.

Any adventure, in any order, or let the Wheel decide. Whoever was there signs the line: a captain, a cousin, the librarian, the neighbor you just met. When a category is complete, bring the book to the Keeper at the store for the stamp. When all hundred are done, the Seal, the coin, and your name in the Book of the Centurion, kept at the Big Tree for as long as the store stands.

The King sets the ninety-ninth adventure for you, in person or through the Century Companion. The hundredth is yours: the one that meant the most, done once more.

Open the Century Companion →

A Dark Harbor Passbook open to On the Water on the store counter, two adventures signed, a pen across it, the Wheel behind
The Dark Harbor Century Adventure Passbook, burnt ochre with gold foil
The Passbook

Yours for life.

The Dark Harbor Passbook is bound in the island’s burnt ochre and issued at the Big Tree Trading Company on Derby Road. The book is the record; the Century Companion on your phone carries the Wheel, the map and your own progress, opened by the number inside the back cover.

Spin the Dark Harbor Wheel →

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