Stone Stripes Satellite image (IMAGE) University of Bern Caption Satellite image of the up to 200 m long, 15 m wide and 2 m deep sorted stone stripes on the southern Sanetti Plateau (ca. 3,900 m.a.s.l.). The stone stripes were probably formed during the last glacial period under much cooler conditions and can best be explained by a natural sorting of the stones in the course of the cyclic freezing and thawing of the ground. Credit Alexander R. Groos / Digital Globe Foundation Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.