Amends the Wilderness Act to designate the following lands within the National Park System as wilderness: Big Bend National Park, Texas (Title I); Bryce Canyon National Park, Utah (Title II); Carlsbad Caverns National Park, New Mexico (Title III); Cedar Breaks National Monument, Utah (Title IV); Colorado National Monument, Colorado (Title V); Crater Lake National Park, Oregon (Title VI); Cumberland Gap National Historic Park, Tennessee, Virginia, and Kentucky (Title VII); Death Valley National Monument, California and Nevada (Title VIII); Dinosaur National Monument, Utah and Colorado (Title IX); Everglades National Park, Florida (Title X); Glacier National Park, Montana (Title XI); Grand Teton National Park, Wyoming (Title XII); Great Smokey Mountains National Park, Tennessee and North Carolina (Title XIII); Guadalupe Mountains National Park, Texas (Title XIV); Hawaii Volcanoes National Park, Hawaii (Title XV); Katmsi National Monument, Alaska (Title XVI); Mount Rainier National Park, Washington (Title XVII); North Cascades National Park and Ross Lake and Lake Chelan National Recreation Areas, Washington (Title XVIII); Olympic National Park, Washington (Title XIX); Organ Pipe Cactus National Monument, Arizona (Title XX); Rocky Mountain National Park, Colorado (Title XXI); Sequoia and King Canyon National Parks, California (Title XXII); Theodore Roosevelt National Memorial Park, North Dakota (Title XXIII); Yellowstone National Park, Idaho, Montana and Wyoming (Title XXIV); Yosemite National Park, California (Title XXV); Zion National Park, Utah (Title XXVI).