- The Hollow Earth is an obsolete concept proposing that the planet Earth is entirely hollow or contains a substantial interior space. Notably suggested by Edmond Halley in the late 17th century, the notion was disproven, first tentatively by Pierre Bouguer in 1740, then definitively by Charles Hutton in his Schiehallion experiment around 1774.
(As it is written, He hath dispersed abroad; he hath given to the poor: his righteousness remaineth for ever.
2 Corinthians 9:9 KJV