Cypress trees in the area can live for hundreds of years; some giants grow to 130 feet (40 m) and are 500 years old. Still, they may be only seventh- or eighth-generation cypresses. Few massive trees survived the logging operations that took place in the 1930s and 1940s. As a result, much of The Big Cypress is protected by various federal or state agencies that include Big Cypress National Preserve, Corkscrew Swamp Sanctuary, Fakahatchee Strand State Preserve and two Indian reservations.[59]