Pluto's Cave in California was named after the Roman God of the underworld. Indigenous people used it long before Europeans arrived.

Pluto's Cave is a 190,000 year-old lava tube. Lava tubes normally they collapse relatively soon as a result of erosion because the ceiling is only a few meters thick. Yet Southern California is a semi arid, dessert like climate where erosion by water is rare. This is why Pluto’s Cave is about 10 times the average age of other lava tubes.

Pluto's Cave is a popular California spelunking destination. It simple to find ones way as there are lots of trails created by the many visitors.

Pluto's Cave is a wild cave so visitors should bring at least two lights per person, sturdy shoes, warm clothes, a helmet and common sense. Always tell someone the planned return time, so that they may call for rescue if necessary.