Scientist Pete Kelsey and his team have 3D-mapped the entire island of Alcatraz, discovering Civil War secrets, prisoner escape routes – and looking at ways to preserve the island for the future.

Scheffler is aiming to become the fourth player after Jack Nicklaus, Nick Faldo and Tiger Woods to win back-to-back Masters.

Fresh advances in 3D scanning technology are making it possible to explore some of the hardest-to-reach and most fragile ...