You may wonder why dead trees and fallen logs are not removed, why streams are not dammed for swimming, and why certain plants and animals are not brought into the park and others removed.

The answer is in the fundamental policy of the National Park Service to maintain the National Parks in their natural state. The landscape scars—remnants of roads and fences, and grazed-over land—will disappear in time. The forests will come back to cover the farmlands, and in its own way the wildlife will balance and adjust to this forest ecology. These are the things you see taking place in your National Parks all over the country.