Plate 27: INSELBERGE Remnant hills surrounded by desert waste nia 21. 1937 This stereogram represents an area of desert in southeastern California between the Chocolate Mountains (off the photo to the right) and the Salton Sea (off the photo to the left). The smooth areas of the stereogram represent the surface of a great mass of debris moving from the mountains downslope toward the Salton Sea. Many temporary interlacing bands represent temporary stream courses through which the debris moves, As the level of debris rises through continued sedimentation the fower hdis become partly or wholly buried in debris. Only the tops of some of the hills may project, as at B.9 1.2 as island mountains (inselberge in German). All of the uplands shown appear to be parts of a lower mountain chain, now fargely bured in debris. Ecy-USDA AAA as Stereo No.-116 USGS Frink 15 quadrangle DESERT LAND FURMS