Going vertical

摘要

I am writing to you today from the summit of En-chanted Rock, a large outcropping of pink granite in the Texas Hill Country, about 100 miles northwest of Austin. The peak is about 1800 feet tall, well above its flat surroundings. At the top, through shimmering walls of heat rising from the bare granite, you can see a number of other similar, mesalike formations— places where the earth is pushed up into massive, flat-topped hills.