This video is about mosasaurs.
Translated from Dutch news agency ANP:
Gigantic fossil found in Maastricht
In the marl quarry near cement factory ENCI in Maastricht a huge fossil has been found. The monster is from the age of dinosaurs. The local Natural History Museum and the ENCI said so in Maastricht this Wednesday.
A spokeswoman for the museum refused to say on Wednesday which prehistoric animal this concerns. She referred to a press conference Thursday in the ENCI quarry.
The museum says this is a “special find”. It is unclear yet whether this is a finding comparable to the mosasaur, found in Maastricht many years ago.
UPDATE: the fossil turned out to be a mosasaur. See here.