“Boy Pony Riders in the Grand Canyon; or, The Mystery of the Bright Angel's Burning Street" is an exciting adventure by Frank G. Petchin. In this book, a group of friends goes on an exciting trip to the Grand Canyon, where they face dangers, solve the mystery of Burning Street and find a way out of difficult situations thanks to their friendly spirit and ingenuity. This book is full of adventure, mystery, and unexpected twists and turns that will keep the reader on the edge of their seat until the last page.