Obelisks, generally of red granite, were quarried by the ancient Egyptians as monolithic blocks of stone and were erected in front of tombs and temples. Some are huge.
فأضخم مسلَّة قائمة اليوم موجودة في احدى ساحات روما ،‏ اذ يصل ارتفاعها الى ٣٢ مترا ووزنها حوالي ٤٥٥ طنّا .‏