The college where I teach is located in a small valley at the southernmost reaches of the Appalachian Mountains. In the morning, particularly in the late autumn and winter, the mountains are sometimes veiled in a thick fog that limits one’s range of vision to a few campus buildings and gives them the appearance of being lost among the clouds. It is easy to forget, during a busy workday, that the mountains are even there. But when the fog eventually lifts, they command fresh attention with their uncanny grandeur and encompassing beauty, and more so for having been temporarily obscured from view. Their sudden appearance disrupts the normal flow of one’s perceptions, intruding upon and unsettling what is, sometimes well into the afternoon, a familiar horizon.