The Undermountain Saga Series by Eric Kent Edstrom

Two teens from from different worlds . . .Seeking refuge from their troubled home lives, sixteen year olds Danny Michaelson and Breyona Lewis join a group of teens in the Canadian Rocky Mountains for a ten day hiking excursion. . . . the encounter of a lifetime . . .Six days in, Danny and Breyona come face to face with a creature of legend--an eight foot tall beast they tag as "bigfoot." But this this is no mere animal, and it doesn't want humans knowing its secrets.. . moreTwo teens from from different worlds . . .Seeking refuge from their troubled home lives, sixteen year olds Danny Michaelson and Breyona Lewis join a group of teens in the Canadian Rocky Mountains for a ten day hiking excursion. . . . the encounter of a lifetime . . .Six days in, Danny and Breyona come face to face with a creature of legend--an eight foot tall beast they tag as "bigfoot." But this this is no mere animal, and it doesn't want humans knowing its secrets.. . . friendship, love, and loyalty . . .Swept into the hidden city of Undermountain, Danny, Breyona and their friends find themselves in a race for survival against alien forces determined to take control the earth. less

The Undermountain SagaPerfect for fans of YA science fiction. A group of teens embarks on a backpacking adventure, each wanting an escape from real life, each for a different reason. For Danny it's his mother's domineering boyfriend; for cheerful Breyona, it's a suppressed memory; for Shiv it's a tragedy he keeps secret; for Wa it's a chance to meet girls... moreThe Undermountain SagaPerfect for fans of YA science fiction. A group of teens embarks on a backpacking adventure, each wanting an escape from real life, each for a different reason. For Danny it's his mother's domineering boyfriend; for cheerful Breyona, it's a suppressed memory; for Shiv it's a tragedy he keeps secret; for Wa it's a chance to meet girls.They have no idea that their hiking trip will take them farther from home than anyone has ever gone before!Afterlife (The Undermountain Saga #2)The six teens who were rescued from a mountainside in the Canadian Rockies are now famous. But only they know the true story about what they discovered, what they survived. Only they know the secrets of Undermountain. Those secrets bind them together and pull them toward an ill-fated reunion.The tangoga boss GorVit searches for a lost technology, the terrible weapon of a vanished race. And he'll happily use Breyona as leverage to get Danny's help.Thrust into the midst of war, and into the arms of a beautiful queen, Danny races on a collision course with destiny. And Breyona, still testing the limits of her amazing powers, must choose between what she desires and what is right.One will give in.One will give up.One will give all. less

Starkiller is the stunning final act in The Undermountain Saga.While the wicked bigfoot leader, Hanameesovenama, plans First Contact with the human race, Danny and Breyona race to stop the vile tangoga boss, GorVit, from using the starkiller weapon to destroy the sun.In their search, they find an ancient king who may hold the key to preventing the apocalypse.