The Sequoia National Park in California's southern Sierra Nevada mountains is best known for its namesake giant sequoias. The park boasts 40 groves of the massive trees, which occur naturally only on its western slopes. But the most beloved is the Giant Forest, a collection of 2000 trees that includes half of the Earth's largest and longest-living trees. This past weekend, the ancient wonders came dangerously close to being scorched by the KNP Complex Fire. But thanks to quick-thinking firefighters, the precious grove has been saved.