By Stephen Mollick | Arcadia, OK

By Michael Hoag | Waverly, Kansas, USA

By David Norman | North Carolina USA

By Mike Jones | Texas Hill Country

By Virginia MacDonald | Manitoulin Island, ON

By Stephen James O'Meara | Maun, Botswana

By Christopher Hamilton | Blue Ridge Parkway (close to Mount Pisgah) NC USA

By Christopher Hamilton | Blue Ridge Parkway (close to Mount Pisgah) NC USA

By Sahil Vohra | Gurugram, Haryana, India

By Rebecca Caroe | Dallas Texas

By Anthony Good | Whiddy Island, Bantry Bay, Cork, Ireland

By David Mark Thompson | Rainbow Basin, San Bernardino County (western Mojave Desert), California

By Peter Lowenstein | Mutare, Zimbabwe

By Peter Lowenstein | Mutare, Zimbabwe

By Peter Lowenstein | Mutare, Zimbabwe

By Peter Lowenstein | Mutare, Zimbabwe