Core Zone 1, San Felipe-Río Lagartos; Core Zone 2, Tular-Petenes; Core Zone 3, Peten Tucha, Emmaly Lagunas Miramar; Core Zone 4, La Cuenca del Cuyo; Core Zone 5, Punta Meco; Core Zone 6, Cancunito-Holchit: Established within the Ria Lagartos Biosphere Reserve, the general user public must take extreme precautions and subject themselves to the provisions of the Management Program and the provisions contained in the Decree published on may 21, 1999 in the Official Gazette of the Federation.