To the Pemon Indigenous people, Mount Roraima is a sacred place. In their mythology, the mountain is considered the stump of a great tree that once held all the fruits and vegetables of the world.

Mount Roraima is a flat-topped formation with crystal-clear pools, waterfalls and a unique ecosystem that has been isolated from the surrounding savanna for millions of years.

PEOPLE's senior royals editor Erin Hill, who interviewed the Duchess of Sussex for the March 17 issue's cover story, gives some behind-the-scenes details about their royally exciting conversation ...