The World Heritage Committee,
1. Having examined Document WHC-12/36.COM/7B,
2. Recalling Decision 35 COM 7B.126, adopted at its 35th session (UNESCO, 2011),
3. Notes that no direct impact on the Outstanding Universal Value of the inscribed property is to be expected from the construction of the Rio Amarillo Aerodrome and requests the State Party, should a decision be made to proceed with its construction, to update the Environmental Impact Assessment and carry out a Heritage Impact Assessment to identify mitigation measures;
4. Acknowledges the information provided by the State Party regarding the implementation of conservation measures for the property and reiterates its request to fully develop a comprehensive strategy for the conservation of the tunnels and the establishment of conservation guidelines for interventions at the property;
5. Also requests the State Party to finalize the process for updating the Management Plan for the property, including provisions for risk management and a public use plan based on carrying capacities studies, and upon completion to provide three printed and electronic copies of the draft revised Management Plan for review by the World Heritage Centre and the Advisory Bodies;
6. Further requests the State Party to update, approve and enforce the regulatory measures for the management of different zones prescribed in the Plan and to work with the Local Government to ensure the protection of the property against development pressures;
7. Urges the State Party to integrate the updated Management Plan within local and regional planning instruments to develop a coherent territorial planning and management strategy with a regional vision;
8. Moreover requests the State Party to submit, in accordance to Paragraph 172 of the Operational Guidelines, the results from the prototype protective shelter for the Hieroglyphic Stairway as well as the technical specifications for the final design, for review prior to implementation;
9. Requests the State Party to submit to the World Heritage Centre, by 1 February 2013, an updated report on the state of conservation of the property and the implementation of the above, for examination by the World Heritage Committee at its 37th session in 2013.