Documentaries
In (1960) two guys got in a metal sphere underneath a gasoline filled blimp and sank down to the deepest part of the Mariana Trench.
In 1960 two guys got in a metal sphere underneath a gasoline filled blimp and sank down to the deepe
In 1960 two guys got in a metal sphere underneath a gasoline filled blimp and sank down to the deepest part of the Mariana Trench.
youtube.com




This looks fascinating--thanks for sharing!