National Geographic America's National Parks: Yosemite and Olympic

Yosemite National Park -- set within California's Sierra Nevada mountains and designated a World Heritage Site -- is home to hundreds of wildlife species, and is famed for its iconic mountain vistas, waterfalls, and giant sequoia groves. Olympic National Park in Washington State, with nearly one million acres, protects a rich mosaic of nature. Untamed rivers flow from glacier-capped peaks through valleys of old-growth forests, and waves crash against 73 miles of spectacular shoreline rich with life.