From Discovery News:
"There is untouched archaeology down there, as well as a delicate ecosystem that includes colonies of bats and a species of spider which we have tentatively identified as the white widow," British explorer Andrew Collins said.
Collins, who will detail his findings in the book "Beneath the Pyramids" to be published in September, tracked down the entrance to the mysterious underworld after reading the forgotten memoirs of a 19th century diplomat and explorer.
"In his memoirs, British consul general Henry Salt recounts how he investigated an underground system of 'catacombs' at Giza in 1817 in the company of Italian explorer Giovanni Caviglia," Collins said.
If true, this is seriously one of the more exciting archeological finds I've heard of--like a real life Indiana Jones adventure!
Image courtesy Wikipedia