Figure 7
From: Detecting desertification in the ancient oases of southern Morocco
Khettara Groups and chronology of khettara construction in Skoura oasis based on analysis of historic KH9 satellite imagery. Note desertification around Groups 10 and 20. Basemap is KH9 1217-100011-F023c, 12th May 1982. Classification generated using Google Earth Engine and map prepared using ArcGIS ArcMap 10.6.1. https://www.esri.com/en-us/home. Service layer source: ESRI, EARTHSTAR Geographics.
