It has small sand landmasses that leads up to a wide, sandy platform that houses a memorial and the spawn location of Snowglow Wood.
Players can access the tunnel by driving any vehicle to the sand slopes carefully, using them as gaps to regenerate health back and slowly progress towards its end.
In its earliest recorded history, it was unfinished in the forms of dead ends and void openings. It also had a similar design to The Maze, though much smaller. During the Alpha Testing Stage, it could be swam into because the "water" did not damage the player. Images or videos of it in this stage are sparse.
The general theory of its purpose during this stage was that it was going to be a maze system (as interpreted by the many winding halls), which was later scrapped for the actual Maze in the Tropics. From there, the abandoned project lay unused until around early 2018.
On March 1st, 2018, the tunnel was finished in the form of sand landmasses, and the completion of the entire tunnel system. This led to players' speculation of an update relevant to an event, a new Wood type, or a new item.
On March 13th, 2018, however, the biggest sand landmass was updated to spawn Snowglow Wood and hold a memorial for a very game-devoted player, Ticktatwert, who died of medical complications. The memorial was in a form of her YouTube thumbnail, a T, and a stone ramp with the text "1997-2018".