9. Another Mother Box
Recent visits to the set of Justice League made it clear that the plot will revolve around the three Mother Boxes seen in that bizarre deleted scene from Batman v Superman.
In case you missed it, that featured Lex Luthor communicating with a mysterious figure that appeared to be Steppenwolf (the now confirmed big bad of Justice League). We actually get to see one of those Mother Boxes in this trailer, and as it’s already been revealed that one was sent to Atlantis, another to Themyscira (Wonder Woman’s home), and the final one to Earth, it’s likely the latter we’re seeing buried here hundreds of years ago.
The significance of this moment remains to be seen, though a good old fashion scavenger hunt is always fun!