Donner Summit, California, Images of America, Paperback The pass over Donner Peak in Northern California is known as Donner Summit and has been a critical route across the Sierra Nevada Mountains for centuries. First it was used by Native Americans, then early settlers, and then emigrant wagon trains such as those used by the ill-fated Donner Party, in whose honor the region is named. The first transcontinental railroad in the United States and the first transcontinental highway in America both made use of the Donner Summit route to gain access to California; even early aviators used a beacon at the Summit for guidance across the Sierras. Most of the communities and points of interest along the railroad and highway route up and over Donner Summit are covered in this book.