A team of international conservators has successfully deployed a revolutionary hydro-nanocellulose injection technique to save the 6th-century rock-cut Buddhas of Pakistan's Swat Valley. The Jahanabad Buddha, which has suffered from severe micro-fissuring and environmental erosion, was treated with a bio-compatible "liquid wood" polymer that penetrates deep into the schist stone to bond internal cracks without altering the monument's external appearance or chemical profile.
This nanotechnology breakthrough offers a non-invasive solution for thousands of other rock-cut heritage sites globally that are threatened by intensifying freeze-thaw cycles and pollution-driven erosion. Unlike traditional synthetic resins, the nanocellulose allows the stone to "breathe," effectively preventing the internal moisture buildup that often leads to surface spalling and structural collapse in ancient monolithic statuary.