The Intra-Earth Chronicles; Book I: The Two Sisters, by Kara Jacobson
In the year 2444, two noble sisters, Sasha (15) and Adrianne (11), have survived a nuclear fallout, only to be torn apart.
The ground splits open and Adrianne is thrown from her horse, plummeting into the ravine. Spurned on by the hope that Adrianne lives, Sasha embarks on a journey through the desert to face the ravine that claimed her only sister. Meanwhile, deep within the earth, Adrianne is running for her life. She took something that did not belong to her.
In The Intra-Earth Chronicles; Book I: The Two Sisters by Kara Jacobson we experience a fast-paced fantasy adventure woven within the earth, and the unshakeable bond between two sisters.