FROOMB!

Hodder paperback, 1966. Cover artist uncredited.

"When explorer John Brunt, a tough, womanising adventurer agrees to make the last exploration left to man, he cannot calculate the spiritual and physical terrors that await him. This is a story of the future and of now. Brunt finds there is no escape from either. He finds he cannot shake off the seeds of destruction he takes with him to the years beyond now. But does destruction come? There must be escape somewhere, somehow. But where? How?"