Miss. Code Ann. § 55-3-103

The decision or determination to close any or all of the state parks shall be effectuated and evidenced by a proclamation of the Governor of the State of Mississippi and which shall be effective upon his execution or issuance thereof. Such park or parks closed shall remain so closed until said Governor shall execute or issue a further proclamation opening same. The use by said governor of the power vested in him by the terms of Section 55-3-101 may be exercised from time to time, as, in his discretion, he may deem necessary for any or all of the purposes specified in said section. Any proclamation of closure need not specify the period of time during which such closure shall be effective.