John Cleves Symmes Jr.

Captain John Cleves Symmes Jr. (November 5, 1780 – May 28, 1829) was an American Army officer, trader, and lecturer. Symmes is best known for his 1818 variant of the Hollow Earth theory, which introduced the concept of openings to the inner world at the poles.


John Cleves Symmes Jr.
"John Cleves Symmes Jr and His Hollow Earth" by John J. Audubon, 1820
BornNovember 5, 1780
Sussex County, New Jersey
DiedMay 28, 1829(1829-05-28) (aged 48)
Resting placeSymmes Park, Hamilton, OH
39°23′43″N 84°33′43″W
MonumentsHollow Earth Monument
(see below)
NationalityAmerican
Occupation(s)Military Officer, Trader
Spouse
Mary Symmes (née Pelletier)
(m. 1808)
ChildrenLouisiana Symmes (b. 1810)
Americus Symmes (b. 1811)
William H. H. Symmes (b. 1813)
Elizabeth Symmes (b. 1814)
John Cleves Symmes (III)
(b. 1824)
Signature
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