A treasured piece at the Dutch national museum - a supposed moon rock from the first manned lunar landing - is nothing more than petrified wood, curators say.
It was given to former Prime Minister Willem Drees during a goodwill tour by the three Apollo-11 astronauts shortly after their moon mission in 1969.
When Mr Drees died, the rock went on display at the Amsterdam museum.
The US agency gave moon rocks to more than 100 countries following lunar missions in the 1970s.
US officials said they had no explanation for the Dutch discovery.
BBC