Oh look, they discovered how the pyramids were built, no ancient aliens involved.

Oh look, they discovered how the pyramids were built, no ancient aliens involved. The base was constructed using a ramp that was later dismantled & used to build a winding spiral ramp on the inside walls, about 6' wide with a grade of approx. 7%. Workers carried stones up these ramps, building more ramp as they went. When they finished, the ramp was sealed within the pyramid walls. The inside ramp's been detectable in microgravimetry images since the '80s.
http://www.archaeology.org/0705/etc/pyramid.html