It is also noteworthy which the Fantastic Four's first journey in 1961 depicts a group of four adventurers (three Gentlemen and a woman) led by a professor travelling to the Earth's center and encountering large monsters when contending which has a human antagonist who is likewise with the floor world. https://johnathanzimuc.dbblog.net/9797059/a-simple-key-for-fantastic-four-unveiled