By Emily Pehrson | Antelope Island, Utah

By Kathie O'Donnell | Rapid City, SD, USA

By C. Alex Young | Towson University, Towson, MD, USA

By Stephen Montag | Livingston, NJ

By Lea Proicheva | Gennep, The Netherlands

By Joseph Kwong | Cholla Cactus Garden - Joshua Tree National Park

By Sheryl R Garrison | Lethbridge, AB Canada

By Tina Clothier | Mauna Kea, Hawaii

By Deirdre Horan | Dublin, Ireland

By Jennifer J. Wilhoit | Bainbridge Island, WA USA

By Scott McDonald | Fort Worth, TX, USA

By Elmarie van Rooyen | Smoky Lake AB, Canada

By Filipp Romanov | Yuzhno-Morskoy, Nakhodka, Russia

By Thomas Dougherty | Lake Mead NRA

By Rod Cerkoney | Fort Collins, Colorado

By Teresa Molinaro | Palermo, Sicily, Italy