Backpackers often experience national parks more intimately than other visitors . Studies show brief experiences in nature can enhance feelings of energy and vitality . Grizzly bears are among the 75 mammal species that inhabit the wilderness . The National Parks Service is a federal agency that manages the nation’s natural resources for all Americans.
Backpackers often experience national parks more intimately than other visitors . Studies show brief experiences in nature can enhance feelings of energy and vitality . The National Parks Service is a federal agency that manages the nation’s natural resources for all Americans.