Why sulfur?
Mike stated that the presence of sulfur in a tunnel like this made sense. “These walls are perfectly cut out, which clearly indicates that they are man-made. And to carve out a tunnel like this, they would have needed to use dynamite, which contains high levels of sulfur. And sulfur smells like rotten eggs.” Brody was impressed by his friend. He didn’t know this fact, so he thanked Mike for educating him.
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