Underground system discovered 30 years ago, then sealed up again MEXICO CITY - Archaeologists are opening a cave sealed for more than 30 years deep beneath a Mexican pyramid to look for clues about the mysterious collapse of one of ancient civilization's largest cities.

CAIRO: A geological study warned that in the coming few years Cairo might be subject to three destructive earthquakes that could measure a staggering 7 degrees on the Richter scale.

The study conducted by Egyptian geologist Taha Mohamed Abul Azayem, predicts that the point of initial rupture of the strongest of the three earthquakes will be south west Cairo, precisely around
Dahshour.

That same area was the epicenter of the most destructive earthquake to hit Egypt in 1992.