In this classic tale of spelunking and derring-do, dashing anthropologist Jonathan Brock (Rick Schroder) must head up a search team to retrieve famous-but-missing explorer Edward Dennison, who is in the last place the team's going to look--the center of the earth. Following the good explorer's footsteps through a secret passage in Alaska without realizing just how deep it goes, Brock and his brave clan will encounter all manner of prehistoric perils that have been waiting below the surface. Peter Fonda co-stars in this rip-roaring adventure.