High in the limestone megaliths at the north end of the lake hide these impressive caves. Tours through the many chambers dripping with massive formations operate daily and include a boat ride across Lake Shasta. Bring a sweater as the temperature inside is 58°F (14°C) year-round. With over 600 stairs, a decent level of fitness is required.
To get there, take the Shasta Caverns Rd exit from I-5, about 15 miles north of Redding, and follow the signs for 1.5 miles.