4. Ice Tunnels on Mount «La Torta”, Argentina Accessible only during the Argentinian summer around January and February, the Ice Tunnels on «La Torta» are a rare sight indeed. A natural formation caused by an inversed melting process, the Ice Tunnels on Mt La Torta are an adventure to get to. This four to five hour tour includes a drive by 4×4 up the mountain followed by a medium difficulty hike. Finally you arrive at the striking natural phenomenon for an experience few will ever see. Would you dare to journey to the Andes and discover this site for yourself? For $1,000 you can do just that.