A Bridge to Another Land
As announced on Disney Parks Blog -
"According to the storyline developed by Walt Disney Imagineering and Lightstorm Entertainment, this bridge was built during a time when a destructive company called the RDA came to Pandora. Now that they’re long gone, nature is breaking down evidence of their presence. This bridge will soon serve as an entry into the base camp of Alpha Centauri Expeditions, the eco-tour group that is preparing Pandora for future explorers and adventure seekers."