Located near Sequoia and Kings Canyon National Parks, California's land of giants, these underrated small towns exude a friendly atmosphere and tranquil paths less frequented by visitors. Whether ...

Crystal Cave, the ancient marble cavern at the end of a steep half-mile hike in Sequoia National Park, is slated to reopen to visitors this summer after four years of closure. The cave features a ...

How was Crystal Cave formed? By and large, Sequoia National Park is formed of granitic rock. The caves, however, form in a rock that's much older — 200 million-year-old marble.