sentences:  In Tanzania, they are joined by tour-guide 'Hassan Kapoora' and cook 'Ali Tabu'.At the advice of general-store owner 'Baba Pambazuka', they pursue intuitively the intelligent earthworm's habitat in the extinct volcano 'Kukumlima', without set directions.Finding Kukumlima accidentally, they discover Gordon Whillikers a prisoner of the earthworms (now identified with gigantic size), required to annually collect the tiny 'elephant mice' used by the worms to purposes unknown.