By Stephanie Longo | Wilkerson Pass, Colorado

By Jonathan Razo | Paredes, Portugal (30 km east of Porto)

By Maggie Romuld | Off the coast of Chile between Castro and Valparaiso

By Deirdre Horan | Dublin, Ireland

By Deirdre Horan | Dublin, Ireland

By Deirdre Horan | Dublin, Ireland

By Deirdre Horan | Dublin, Ireland

By Peter Lowenstein | Mutare, Zimbabwe

By Alina Chalubowicz | Birmingham,UK

By Idriss Dhoparee | London, United Kingdom

By Idriss Dhoparee | London, United Kingdom

By Idriss Dhoparee | London, United Kingdom

By Steve Pond | East Grinstead, UK

By Victor C. Rogus (FRAS) | Sedona, Arizona

By katherine crozier | Bucks County PA USA

By katherine crozier | Washington Crossing, NJ USA