  Preservation of the Nasca geoglyphs at the UNESCO World Heritage Site in Peru
is urgent as natural and human impact accelerates. More frequent weather
extremes such as flashfloods threaten Nasca artifacts. We demonstrate that
runoff models based on (sub-)meter scale, LiDAR-derived digital elevation data
can highlight AI-detected geoglyphs that are in danger of erosion. We recommend
measures of mitigation to protect the famous "lizard", "tree", and "hand"
geoglyphs located close by, or even cut by the Pan-American Highway.
