The Ear of Dionysius, the largest of the many caves in Siracusa, on the island of Sicily. The shape of the cave creates astonishing acoustical effects wherein a whisper at one end of the cave can be heard clearly at the other. (image by Stefania Guidice)
Demanovska Cave “Freedom Cave” the longest cave system in the country of Slovakia, central Europe. Slovakia was formed in 1993 following the peaceful dissolution of Czechoslovakia. (admian on pixdaus.com)
Tavurvur, an active volcano near Rabaul, Papua New Guinea, has erupted as recently as January 2009.
Mountainous Tibet, the highest region on earth, with an average elevation of 4,900 metres (16,000 ft) (reurinkjan flickr)
Patagonia is a region located at the southern end of South America, territory shared by the countries of Argentina and Chile which comprises the southern portion of the Andes mountains. (Stuck in Customers flickr)
Umbala Top, India (deepsan.livejournal.com)
Terraced rice fields in Sapa, Vietnam (Robert Kroenert flickr)
