(Source: WWF - World Wildlife Fund USA) Some of the scars are 100 years old. Piled up in corners or along fence lines, these unsuspecting stacks of boulders tell a story that's unfolded before -- a tale of people's determination to turn this land into something more profitable. Some two billion years ago, glaciers covered parts the Midwest. As they melted, the rocks and debris trapped within the walls of ice were deposited across Nebraska. In part, this is what makes soils east of the 100th meridian (basically, north and south of North Platte) rich and fertile. But it's also what makes the ground to the west rocky and rough. Every couple of decades, people try it again. They pile rocks and...
↧