By Deirdre Horan | Dublin, Ireland.

By Andrea Deegan | Albany Western Australia

By Deirdre Horan | Dublin, Ireland.

By Deirdre Horan | Dublin, Ireland.

By Ondrej Králik | Stratenec lookout tower, Slovakia

By Alessandro Casprini | Lasco di Picio, Monte Romano (VT), Italy – GRAG site

By Andrea van de Loo | Davenport, CA

By Rudra Protap Nandi | Khulna, Bangladesh

By Deirdre Horan | Dublin, Ireland.

By Deirdre Horan | Dublin, Ireland.

By Saundra McPherson | Santa Fe, New Mexico, US

By Deirdre Horan | Dublin, Ireland.

By Fredric Walder | San Francisco

By ADRIAN HAYWARD | Manea, Cambridgeshire, UK

By Audrey Jensen | Pauma Valley

By Andrew Fisher | Georgetown Ohio