Aired: February 6, 1965 | Season: 1 | Episode: 19

Overview
Runtime: 25m
Directed by: Lawrence Dobkin
Written by: Al Schwartz (I) (1910–1988), Howard Harris, Howard Merrill
Guest stars: Kurt Russell
Description
Gilligan discovers a jungle boy living on the island. He shows them a hole in the ground that causes objects to float, and the professor theorizes that it is expelling either helium or hydrogen. He immediately sets to work building a large balloon, with the hopes of carrying one of them back to civilization.