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Acheulean technology and landscape use at Dawadmi, central Arabia

Fig 8

Boxplot of the scar density index (scars per square inch) for a sample of 84 Saffaqah bifaces (including early stage pieces), showing that bifaces away from the dyke are more reduced than those near the dykes.

Sites where a wadi flowed past a dyke were classed as dyke sites. Base layers reprinted with permission from Esri, ArcGIS, DigitalGlobe, GeoEye, i-cubed, USDA, USGS, Aex, Getmapping, Aerogrid, IGN, IGP swisstopo, and the GIS User Community under a CC-BY license, original copyright 2018.

Fig 8

doi: https://doi.org/10.1371/journal.pone.0200497.g008