Geologist claims the site in West Java could be 9,000 to 20,000 years old . Dr Danny Hilman says man - made hillside resembles a pyramid structure . Tests have suggested parts of the structure date to 4000 years . Could re - write pre - history , but other experts claim excavation is impossible .
Geologist claims the site in West Java could be 9,000 to 20,000 years old . Dr Danny Hilman says man-made hillside hides a pyramid structure . Tests have established parts of the structure date to 7,000 BC . Could re-write pre-history , but other experts claim excavation is flawed .