The trailer also shows Creel House and a man with no eyes who is likely to be Victor Creel.
The official trailer for Stranger Things season four has been released.
The new season will be split into two parts: Volume 1 is out on 27 May; Volume 2 starts streaming on 1 July.
At the end of the trailer, a horrifying, humanoid creature is introduced hanging in the Upside Down and is revealed to be the one narrating the trailer, saying at the end: “It’s time.