Tunnel Through Time

Is it too late to save Pete's father? There is only one way to find out. Pete and Bob must go through the time tunnel. Illustrated by Hal Frenck. Science fiction time travel tale for young adults. A survival story that showcases the palaeological theories of the 1960s. Two teenagers, Bob and Pete, go back through time to the Ice age to rescue Pete's father, who has not returned from a trip in Bob's father's defective time machine. Has the experimetn failed? What has gone wrong? Is it too late too save Pete's father? There is only one way to find out. Pete and Bob must go through the time tunnel