Co Rd 708
Zalma, MO 63787
Castor River CA is nearly all forest with several small springs scattered across the area, including Blue Pond Natural Area. Blue Pond is the deepest natural pond in Missouri at more than 65 feet deep. It's believed to have been formed from a cavern collapse during the New Madrid earthquake in 1811. Facilities/features at Castor River CA include primitive camping, multi-use trails for hiking, biking and horse riding, numerous intermittent streams and one permanent stream.