Instead of building massive, visible stone fortresses, a "snake" builds small, hidden "ratholes" or underwater bases that are difficult for raiders to spot.
As the Ark After Dark snake gained popularity, a multitude of theories and legends emerged to explain its existence. Some players believed the snake was a glitch or a bug, while others thought it might be a hidden creature or a Easter egg left by the game developers. arkafterdark snake
The most direct hit for the "ArkAfterDark" portion of the search is a user by that name on the official forums for the game . Instead of building massive, visible stone fortresses, a