Ships go belly up, high-rise towers burn, Mother Nature blows her volcanic top -- all perfect settings for Irwin Allen to unleash his gift for putting star-studded casts in peril and audiences on the edges of their seats. Now the prolific producer plunges deep below terra firma into the rocky perils of Cave In! A handful of citizens (travelers, government officials, a park ranger) are trapped after the sudden collapse of the popular Fiv
