57
Authorities in Egypt have revealed that there is almost certainly a hidden room in Tutankhamen's tomb.
104
A new scan of the Khufu pyramid has turned up possible evidence of a hidden chamber within its walls.
104
An international team is planning to use modern scanning technologies to seek out hidden chambers.
15
A 20 million-year-old flea trapped in amber is thought to be carrying the ancestor of Black Death.
45
A treasure trove of bones has been found inside a hidden chamber within a cave near Johannesburg.
93
The mysterious Nazi gold train in Poland may contain an ornate room stolen from St Petersburg in 1941.
15
A 100 million-year-old predatory cockroach has been found perfectly preserved in a piece of amber.
54
A chamber containing 11,200 cubic miles of molten rock has been found below Yellowstone National Park.
123
Archaeologists excavating the ancient tomb near Amphipolis have discovered the remains of a skeleton.
15
Archaeologists excavating a subterranean tunnel below the ancient city have unearthed three new chambers.
7
Jewellery, animal pelts and amber beads are among the finds retrieved from a 4,000-year-old tomb.
16
Scientists have played down the idea that dinosaur DNA can be extracted from insects preserved in amber.