Sequoia's Crystal Cave switches on solar-fed light May. 07, 2010 By Mark Grossi / The Fresno Bee
Popular Crystal Cave -- home to eyeless bugs and spiders with monster jaws -- will be illuminated by the power of the sun starting Saturday.
For decades, Sequoia National Park visitors have toured the marble cave under the glare of incandescent lights that have drawn power from a propane generator.
On Saturday, when the cave opens for tourist season, the lighting will switch over to solar power fed into a system of light-emitting diodes, known as LEDs, which are stingy in electricity use. It is believed to be the National Park Service's first cave lit by the sun.