By John Shaw | Lincoln Nebraska

By Bette Lutes-Konecny | Puerto Vallarta, Jal. Mexico

By Dr Ski | Valencia, Philippines

By Dr Ski | Valencia, Philippines

By Carol Comer | Great Barrier Island

By Tanima Chaturvedi | Jersey City, NJ, USA

By Geraint Smith | Taos Volcanic Plateau

By Dodeen Martin | Langley, BC

By Dr Ski | Valencia, Philippines

By Dr Ski | Valencia, Philippines

By Dr Ski | Valencia, Philippines

By Russell Fox | Cobram, Victoria Australia

By Dr Ski | Valencia, Philippines

By Dr Ski | Valencia, Philippines

By ADRIAN SELDEN | Faringdon, Oxfordshire, UK

By Alexander Krivenyshev | New York