Conservationists have successfully deployed a revolutionary 'Ionic-Exchange' Nanofilm to protect the 2nd-century BCE Lycian rock-cut tombs of Kaunos in Turkey. The ultra-thin, breathable coating prevents the accumulation of salt crystals and atmospheric pollutants that have been slowly eroding the delicate limestone facades for decades.
The project, funded by the Global Heritage Preservation Initiative, represents a major advancement in preventive conservation. Unlike traditional sealants, the ionic film reacts with the stone's surface to create a durable, self-healing barrier that does not trap moisture or alter the visual appearance of the ancient carvings.