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About this book

What if the world beneath the polar ice has more to teach a captain than he has to trade?

Captain Adam Seaborn sails south in search of knowledge and profit. Inspired by a theory of hollow shells and openings at the poles, he leads the Explorer into ice, fog and fierce weather. His crew doubts the plan, but the American captain presses toward a world he hopes to find.

In Symzonia, the people of the inner world challenge more than Seaborn's sense of geography. Calm and orderly, they question his idea of civilisation. Their wise leader, the Best Man, measures the visitor by reason and goodness. This short novel turns a voyage of discovery into a pointed question: what makes a society worth admiring?

What you’ll discover

  • A voyage into doubt Follow sailors through southern ice as their captain's ambitions strain against their fears.
  • An Earth with secrets Explore an early science fiction tale built around the strange promise of a hollow planet.
  • A captain under scrutiny Watch Seaborn seek knowledge and profit while his hosts question what he calls civilisation.
  • A different social compass Meet the Best Man, whose standards of reason and goodness put the visitor's world to the test.
  • Satire beneath the adventure Consider how a commercial, ambitious nation measures up against an imagined wiser society.

Who will love it

Readers who enjoy sea voyages, odd scientific theories, utopias and sharp satire will find plenty here, along with anyone who likes a narrator whose pride keeps getting in his own way.

What’s inside

The key ideas, in the 15-minute summary

  1. Seaborn sets out to prove himself
  2. Land interrupts a brewing mutiny
  3. The compass loses its authority
  4. The explorer becomes the specimen
  5. Usefulness matters more than wealth
  6. Greed threatens a peaceful society
  7. Certainty leaves little room for doubt
  8. A reliable log hides unreliable judgment
  9. Two worlds measure wealth differently

Who’s who

  • Captain Adam SeabornThe proud, self-admiring master of the Explorer, who is certain the earth is hollow and wants fame and fortune from proving it.
  • Mr. SlimThe gaunt, greedy third mate who doubts the captain, stirs up the crew and cares most about his share of the cargo.
  • Will MackerelThe blunt, loyal fourth mate who backs his captain and wants to see where the voyage leads.
  • Mr. AlbicoreThe dutiful second mate, who follows orders exactly and sometimes mentions the most important thing as if it were nothing.
  • Mr. BonetoThe chief mate, left to command the sealing station while the captain sails on toward the inner world.
  • Jack WhiffleThe boatswain's mate and fine marksman, trusted by the captain, who watches the penguins and keeps the boat ready.
  • SuruiThe Symzonian guide and interpreter who explains his country's government and tries to teach the stranger its ways.
  • The Best ManThe chosen leader of Symzonia, kind and firm, who wants to protect his people's purity from outside greed.

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Science Fiction

Symzonia: A Voyage of Discovery

by Adam Seaborn · 1820

A sealing captain sails through the South Pole into a hollow world where goodness decides who rules.

Challenging2–5 hours to read20 languages

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In short

What would you do if a sealing captain told you the earth is hollow and open at both poles? Captain Adam Seaborn is sure of it.

Symzonia: A Voyage of Discovery by Adam Seaborn, the cover

Symzonia: A Voyage of Discovery at a glance

Reading time
About 2 h 50 min2 h 15 min fast, 3 h 20 min slow
Length
40,200 words
Library level
Challenging long sentences, a rich vocabulary
First published
1820by Adam Seaborn

Reading time at 238 words a minute (fast 300, slow 200). How long the classics take to read · Updated

From the 15-minute summary · Key idea 1

A captain builds a ship for the poles

In 1817 Captain Adam Seaborn decides that the known world is used up. Its wealth is claimed and its wonders explored. He reasons that a bountiful Providence would not give people a hunger for a larger world without providing one. So he sets out to find it, and his first problem is the ship.

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15-minute summary
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Details
First published
1820
Language
English
Level
Challenging

Cite this edition

Seaborn, Adam. Symzonia: A Voyage of Discovery. Library of Alexandria, 2026, libraryofalexandria.com/products/symzonia-a-voyage-of-discovery.

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What is Symzonia: A Voyage of Discovery about?

A sealing captain, Adam Seaborn, builds a steam ship and sails through an opening at the South Pole into a hollow inner world. There he meets a peaceful people whose society honors virtue and usefulness above wealth.

Who was John Cleve Symmes and what is his hollow earth theory?

Symmes was an American who argued that the earth is made of nested spheres, open at the poles, so that ships could sail inside. Seaborn honors him and names the inner land Symzonia in his debt.

Who wrote Symzonia and when was it published?

It appeared in 1820 under the name Captain Adam Seaborn, which most scholars treat as a pen name. The true author is debated. The voyage it describes is set in the years from 1817 to 1819.

The author

Adam Seaborn

Pseudonymous American novelist

Author of Symzonia: A Voyage of Discovery.

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