Endless desert plains and high steep mountains: a series of parallel limestone ranges showing karst features in a high altitude desert environment, with cave entrances between 3,000 and 3,900 m a.s.l. Baysun Tau: hight altitude caves and mountain chains of Uzbekistan
Active volcano but visible in safety, without explosive or lava phenomena, with an amazing green lagoon inside the crater that was formed in the last eruption in 1982. Chichonal Volcano
An extraordinary underground estuary that flows into the South China Sea, on the western coast of Palawan, after a subterranean journey of almost 8 kms. The river of the swallows, Palawan
One of the most active volcanoes in the World, where – with extreme dangers – it is possible to reach the molten lava lake in the crater interior Nyiragongo, into the Inferno
One of the oldest landscapes on Earth, between the Amazon and the Orinoco basin, through ancient caves, vertiginous walls, endless waterfalls and impenetrable forests. Tepui, at the thereshold of time
