Volcanoes

so i am writing this story with a theme. The theme is that volcanoes are the key to the core of what i want to do with the main characters' career. the core of the earth with speculated gold insulation is where the main character needs to get to. He is not aware of the volcanoes. They just keep erupting. He sometimes feels rumbles. Sometimes he smells the ash. sometimes he comes close to touching the liquid hot magma. Basically there are these famous volcanoes that keep getting mentioned within the text. I am also using the theme of Verne's characters and the motif of journey to the center of the earth. A submotif along the same lines is that the main character is getting coded messages that lead him to find something on the vocational map that leads him to the proper volcano that will take him to the center of his ... career.

this theme is new. all of these motifs have not really been mentioned in the novel as of yet. But the climax or eruption of the book is coming soon after this section of the book. The prior hints are in a different more straightforward manner.