For years, people claimed a video depicted a man finding a secret cave offering a free way into Disneyland. The clip spun up other rumors, as well.

When Floyd Collins ventured into Sand Cave in Kentucky on Jan. 30, 1925, he was searching for the next big attraction. But he never made it out alive.

“Every poor person that had a plot of land that had a cave on it thought they had a gold ... he kept his eyes on an imaginary ray of light, but the light is dark forever.” ...