A typical cave-digging day turns sour for Floyd Collin when he finds himself stuck inside the Great Crystal Cave. A typical cave-digging day turns sour for Floyd Collin when he finds himself stuck inside the Great Crystal Cave. A typical cave-digging day turns sour for Floyd Collin when he finds himself stuck inside the Great Crystal Cave. A typical cave-digging day turns sour for Floyd Collin when he finds himself stuck inside the Great Crystal Cave.