Alex and her mum had a heated argument
There is a scary train ride scene, that Alex and Harper go on which sped up out of control nearly crashing into other trains and almost crashed into the dead end wall and it scraped against the side train damaging their train car wall.
Justin sinks into quicksand which he nearly drowns in but gets saved in time, also Jerry sinks in the quicksand but also gets saved.
Alex and Justin in the cave slips on the ledge and nearly falls to their death but they rescued themselves and they are seen escaping from the cave that is collapsing.
The kids lose their parents. A boy is walking on a very narrow ledge.