Location: North Kaibab Trail, the Grand Canyon

Price: $250 (For Rights to Oxford University Press only).

A brief respite in the long trek across the Grand Canyon. Few attempt the daunting Rim to Rim in a day, and fewer detour to find this whispering grotto of ferns, travertine domes, and showering falls. Those who do, find replenished energy in the cool water and food seasoned by their efforts.