"Nethergrave" by Gloria Skurzynski

Claim/Topic Sentence on Conflict: What type of conflict does the author use?

HINT: Character vs. Character, Character vs. Nature, Character vs. Society, Character vs. Self? Is the conflict internal or external?

Based on the given information, it is not possible to determine the specific type of conflict that the author uses in "Nethergrave" by Gloria Skurzynski. Additional details are needed.