"Eight-year-old G.G. climbs all over stuff -- from the couch in her apartment to the boulders at the park. So when she's invited to Stinky Sarah's birthday party at Rock Star climbing gym, G.G.'s up the wall in no time. But then she and her friend, Isaac, take a rock climbing class. When they head outside, things are suddenly more difficult. Can G.G. brave those steep rock faces up Zoo Canyon?"--Page 4 of cover.

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