By caroline haldeman | Flagstaff, AZ, USA

By Roberto Porto | cumbre vieja volcano, la Palma Canary islands

By Eric Hawkins | Bailey Island, Maine

By Antonio Gonzalez | El Paso, La Palma Island (Canary Islands - Spain)

By Basudeb Chakrabarti | Pokhriabong, India

By Marc Toso | Bonneville Salt Flats

By Eliot Herman | Mayhill, New Mexico

By Asha Prasad | Saint Paul

By Om Prakash Gupta | Konch, Uttar pradesh, India

By Ragini Chaturvedi | NJ, USA

By Matthew Ng | Hong Kong

By Hassan Dadashi . arani | Esfahan.iran

By Jenny Munoz | Portland, OR United States

By Raul Cortes | Monterrey, Mexico.

By Nina Gorenstein | West Lafayette, IN, USA

By Jane T | Hong Kong