Clarence King,
Mountaineering in the Sierra Nevada
“ Mount Whitney itself springs up and out like the prow of a sharp ocean steamer. Southward along the summit my sketch is of a confused region of rough-hewn granite obelisks and towers, all remarkable for the deep shattering to which the rock has been subjected. It is a region which may even yet suffer considerable perceptible change, since a single winter’s frost and snow must dislodge numberless blocks from the crests and flanks of the whole group. Indeed, at the time of my visit, notably the period of least snow and frost, we often heard the sharp rattle of falling débris. ”
