Sarah Williams is a young Welsh immigrant, coming to Utah to join her sister Mary Ann Perkins and her young family. When the Perkins' are asked to join the San Juan mission to pioneer a trail through Southern Utah, they take Sarah along to help care for the children. But a six-week journey turns into six agonizing months of hard work and toil as the Saints blast their way through a cliff to bring their wagons through what would become the famous Utah landmark "Hole in the Rock."This LDS historical fiction novel is based on the life of the author's great-great-grandfather and accurately depicts the experiences of these intrepid pioneers as they sought to be obedient to a higher call.