Sheerin rides the Tunnel of Mystery

Despite his fear, Sheerin decides to ride the Tunnel of Mystery to understand the experience firsthand. He is given an abort switch but throws it away. The fifteen minutes of total Darkness are a terrifying ordeal, pushing him to the brink of panic. He emerges shaken and profoundly affected, realizing the immense psychological danger of the ride. He later gives a scathing report, declaring the Tunnel deadly and demanding its permanent closure.