The area has thin pebbly soil with very sparse vegetation cover. About 50 km northwest of Marseille, not far from the Mediterranean, so the site has the possibility of atmospheric water vapor and aerosol problems. (Source: Network for Calibration and Validation of Earth Observation (NCAVEO) Web site, NCAVEO).
Google Earth: Looks very homogeneous across the site, but the imagery may be saturated such that details cannot be discerned.