'Cavities’ discovered in Egypt's Great Pyramids

Egypt's Great Pyramid of Giza could contain two previously unknown "cavities", scientists using radiography to scan the millennia-old monument said on Saturday
●    The antiquities ministry cautiously announced finding "two anomalies" in the pyramid built 4,500 years ago under King Khufu, with further tests to determine their function, nature and size.
●    At 146 metres (480 feet) tall, Khufu pyramid, named after the son of pharaoh Snefru, is considered one of the seven wonders of the ancient world.
●    It has three known chambers, and like other pyramids in Egypt was intended as a pharaoh's tomb.
●    Another "cavity" was discovered on the pyramid's northeast flank, said the researchers who are using radiography and 3D reconstruction for their study.