The Peruvian government has declared a state of emergency for the archaeological site of Chan Chan, which was placed on UNESCO's List of World Heritage in Danger in 1986, the same year it was inscribed on the World Heritage List.

An article from Livinginperu.com explains:

"Its adobe, or earthen, structures are quickly damaged by natural erosion as they become exposed to air and rain and they require continuous conservation efforts and substantial ancillary measures. However, these efforts have become increasingly difficult. In order to face the potential damages, Peruvian authorities today declared a state of emergency for the next 120 days during which a specific preservation plan will be developed and applied. The government stated that the imminent appearance of another "El Niño" effect, projected to arrive at the Peruvian coast by the end of December, leaves the site exposed to natural disasters such as floods caused by overflowing rivers."

Full Livinginperu.com article