In the 2015 Christmas special The Husbands of River Song, River Song says she dug up the ship to find out when it crashed:
SCRATCH: What meteor strike?
COMPUTER: Alert. Meteor storm imminent.
RIVER: That meteor strike.
FLEMMING: How could you know?
RIVER: I'm an archaeologist from the future. I dug you up.
RIVER: See you in four hundred years.
Then why is she surprised? When it is about to crash into Darillium, surely she had to go there to dig them up, and would have known that's where they where headed? Yes, it might be a surprise she's headed there with the Doctor, but she should know that's where it's headed.