PUERTO PRINCESA UNDERGROUND RIVER

Palawan, Philippines

PERITO MORENO GLACIER

Santa Cruz, Argentina

ON THE TOP OF MOUNT VESUVIO

Naples, Italy

ATACAMA SALT DESERT

Antofagasta, Chile

CORONA LAVA TUBE

Lanzarote, Spain

JAMEOS DEL AGUA

Lanzarote, Spain

VATNAJOKULL GLACIER

Iceland

REJA “THE CLOUD”

Tirana, Albania

ALBANIAN MOUNTAINS

Albania

IRAN SALT DESERT

Iran

CENOTE ABYSS

Bolzano, Italy

ARCHAEOLOGY IN CARTAGENA

Cartagena, Spain

RISERVA NATURALE DEI VULCANI DI FANGO DI NIRANO

Fiorano Modenese, Italy

MUSEO LUIGI DONINI

Bologna, Italy

THE NüRBURGRING MUSEUM

Nürburg, Germany

GROTTA DI SAN DONATO DI LAMON

Belluno, Italy