Tags: Cave.
Boyden Cavern is a solutional cave system in the located in California’s Giant Sequoia National Monument along the Kings Canyon Scenic Byway and just west of Kings Canyon [National Park]]. It is formed in Mesozoic marble (metamorphosed limestone). Regular tours of the cave are given by a licensed guide company from the last Friday in April to mid November. It is a cave with many varieties of natural speleothems including rare shield formations.