Shifting the blocks may be difficult with our tech, but that doesn't hold true for neolithic know-how. pivots, wedges and rollers are sufficient.
Quote:I don't understand why you'd come to a discussion forum, and then proceed to reap from visibility any voice that disagrees with you. If you're going to do that, why not just sit in front of a mirror and pat yourself on the back continuously?-Esquilax
Evolution - Adapt or be eaten.