An “amazing” geological formation near the village of Davlos has wowed observers. The formation, which consists of a series of alternating layers of clay, marl, sandstone, limestone, and other types ...
The 9 photographs document geological and botanical observations of Bohumil Shimek while in Iowa. Photographs are undated and are grouped by number. They are individually numbered and include typed ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results