Mystery of Pothole Origins - Photo essay on potholes of the Niagara Escarpment. Links to other sites on potholes. Carolina Bays - Investigation into the possible origin of these enigmatic wetland depressions scattered across the Eastern U.S. coastal plain from southern New Jersey to northern Florida. Deserts: Geology and Resources - USGS online book, written for a general audience. Covers desert climates, desert landforms, sand dunes and aeolian processes, evaporite mineral deposits, and related topics. Geomorphology Home Page, University of Virginia - Information and research on fluvial geomorphology and landform evolution on Mars. The Virtual Geomorphology - Electronic textbook assembled from links to on-line resources. Languages: English, Polish. Is Geomorphology within Geography or Geology? - Extended discussion of the question whether geomorphology is a subdiscipline of geology or of physical geography.