Mr Clemens, Giger enver sdesigned a pyramid, that is the egg silo, an alternative to the pyramid concept, which was designed by Chriss Foss and Ron Cobb, I believe. It was cut from Dan O'Bannon's screenplay. If Ridley wants to bring it back, then it was Alien's idea and part of the original mythology, not AVP's. We've had nifty pyramids in Blade Runner and Terminator 2: 3D.