Mistakes
There's not enough dirt around the edge or in the water down in the hole to represent the amount of dirt that was displaced when it collapsed in. See more...
Movie Mistakes blog
Popular blog posts:
Top 15 biggest Harry Potter film mistakes
The 10 biggest mistakes in Iron Man 1 & 2
15 biggest mistakes in Titanic
Other great sites
Mary Horowitz: I will eat you like a mountain lion.
Norm the Truck Driver: You missed the bus, probably because you're not meant to take it.
Mary Horowitz: It's like taking 10 friends on a camping trip.