Fonti
1 Heller, C. (2015). Turkey’s ‘fairy chimneys’ were millions of years in the making. smithsonianmag.com
2 Oberhoizer, O. and Cockburn, A. (2010). Socotra Island: Exploring the land of the dragon’s blood tree. cntraveler.com
3 Ireland. (2017). The giant story. ireland.com
4 Best Hotels Colorado. (1999). Legends and children's stories of the Ute tribe. besthotelscolorado.com
5 Visit Húsavík. (2017). Ásbyrgi Canyon. visithusavik.com
6 Lin, K. (2017). Moeraki boulders – Spheres of nature in Otago, New Zealand. historicmysteries.com
7 Weekday Wanderlust. (2017). Salar de Uyuni. weekdaywanderlustlooks.com