You engineers will be slapping your foreheads before you finish this video.
http://j-walkblog.com/index.php?/weblog/posts/moving_big_rocks
http://j-walkblog.com/index.php?/weblog/posts/moving_big_rocks
Prof said:You engineers will be slapping your foreheads before you finish this video.
http://j-walkblog.com/index.php?/weblog/posts/moving_big_rocks