Other Timelines |
Real life: 1818 Scion: 1818 They Came From: 1818 |
Trinity Continuum: 1818 |
Events[]
- John Cleves Symmes Jr. posits a Hollow Earth comprised of a series of concentric spheres with openings at the North and South Poles.[1]
References[]
1817 | 1800s 1810s |
1819 |