Geology and Earth Science Appalachian Mountains and Plate Tectonics Catoctin Formation Colors of Nature Columnar Jointing Great Falls and the Fall Line Weverton, Hampton and Erwin Formations Iron Furnaces Lime Kilns Massanutten Sandstone Meandering Rivers Needle Ice Old Rag Granite Pedlar Granodiorite Serpentine Skolithos Ichnofossils Vernal Pools Share this:FacebookLike this:Like Loading...
Hiker's Notebook 