This image is a derivative work of the following images: File:Horst_graben.jpg licensed with PD-USGov-USGS 2008-12-06T13:29:23Z Woudloper 271x135 (41998...
term=graben Author U.S. Geological Survey Permission (Reusing this file) Other versions Derivative works of this file: Fault-Horst-Graben.svg Horst slenk.jpg...
