The Best Travel Guide to Arnold, California
Provided by: Felix Lipov / Shutterstock.com

Mercer Caverns

A magnificent part of California natural history since its discovery in 1885, Mercer Caverns is home to a wealthy variety of natural cave formations. Visitors are invited to take a tour of the Caverns and view a variety of stalactites, stalagmites, draperies, columns, flowstone, helictites, and soda straws. Gaze upon delicate aragonite crystal formations at one of the cavern's deepest points, for which Mercer Caverns won a Grand Prize at the 1900 Paris World Exposition.
Read more
View on map