by 
First pic is down the mine air hole and the second pic is
down the elevator shaft at the library.
hmmm...looks to me like two different areas. I think i see a
tree branch on the mine air hole coffin with more debris/growth. It also looks
closer to the rocks to me; like it is nestled tightly among them.
The library shot looks 'cleaner' and somewhere more open.
Conclusion: mistake of some kind - prop or location or
something.
However it does not appear to be FTL where the library
coffin is so at least that theory is debunked.
