The American author, Samuel Clemens (Mark Twain) wrote "The smell of sulfur is strong, but not unpleasant to a sinner.” after visiting Hawaii's Kilauea Volcano

The American author, Samuel Clemens (Mark Twain) wrote "The smell of sulfur is strong, but not unpleasant to a sinner.” after visiting Hawaii's Kilauea Volcano in his book "Roughing It".