By Ron Andersen | Joshua Tree National Park, California, USA

By Alexander Krivenyshev | Manhattan, New York

By Jeremy Likness | Otter Rock, OR, USA

By Sudhir Sharma | Stormville, NY

By Soumyadeep Mukherjee | Kolkata, India

By Thea Schenk | Sortland area, Norway

By Karen Frederick | Evanston, Illinois

By Cameron Frankish | Tywarnhayle Copper Mine, Porthtowan, Cornwall, UK

By Kevan Hubbard | Seaton Carew, Co Durham, England

By Hassan Dadashi . arani | Esfahan . Iran

By Roland Kueng | Grindelwaldm Switzerland

By Hassan Dadashi . arani | Esfahan province

By Lorraine Boyd | Cohoes, New York

By Gin Kovatch | Tucson, AZ, USA

By Paul Wilson | Paso Robles, CA., San Luis Obispo county

By Tony Everhardt | Ottawa National Wildlife Refuge. Ottawa County, Ohio