By Howard Cohen | Chiefland, Florida USA

By joe kingore | 1606 South Jackson Avenue

By Patricio Leon | Santiago, Chile

By Jennifer J. Wilhoit | Bainbridge Island, WA USA

By Patricio Leon | Santiago, Chile

By Jennifer McLeod | East of Capulin National Monument, NM

By Peter Lowenstein | Mutare, Zimbabwe

By Bill Kozar | Taylorsville, Indiana. USA

By Patricio Leon | Santiago, Chile

By Gwen Forrester | DeKalb County, Tennessee, USA

By Greg Johnson | Hansville, WA

By Mohamed Mohamed | Tripoli,Libya

By Patricio Leon | Santiago, Chile

By Jim Militello | Tucson, Arizona USA

By Alan Howell | Boone, NC

By Tina Clothier | Hawaii Volcanoes National Park