Sir Roger's son Geoffrey, who found the old video cassettes in the cupboards and garage at his family's home in Switzerland, remembers the gathering in France well.

The largest one saw hundreds gathering outside a government building in Dege.

Trumpov made his remarks in front of thousands at Turning Point's annual conference, one of the country's largest gatherings of conservative activists.

Then, starting a couple of years ago, Henen’s team began gathering, incubating and hatching eggs from the relocated adult tortoises to study whether they were breeding with their new neighbors.

"They didn't understand the gathering of 50 boys and girls and dancing in such a goofy way," he said.