World

Egypt detects 'impressive' anomaly in Giza pyramids scans, plans more research

  • French architect Jean-Pierre Houdin, noted for a theory on pyramid construction, speaks during a press conference, in front of the Khufu pyramid in Giza, Egypt, Monday, Nov. 9, 2015. Egypt's Antiquities Ministry says a scanning project in the Giza pyramids has identified thermal anomalies, including one in the largest pyramid, built by Cheops, known locally as Khufu. (AP Photo/Nariman El-Mofty)

    French architect Jean-Pierre Houdin, noted for a theory on pyramid construction, speaks during a press conference, in front of the Khufu pyramid in Giza, Egypt, Monday, Nov. 9, 2015. Egypt's Antiquities Ministry says a scanning project in the Giza pyramids has identified thermal anomalies, including one in the largest pyramid, built by Cheops, known locally as Khufu. (AP Photo/Nariman El-Mofty)  (The Associated Press)

  • French architect Jean-Pierre Houdin, right, and Egypt's Antiquities Minister Mamdouh el-Damaty, second right, stand near the limestone rocks that are displayed on the screen showing varying temperatures represented by different colors with live footage from a thermal camera, in front of the Khufu pyramid in Giza, Egypt, Monday, Nov. 9, 2015. Egypt's Antiquities Ministry says a scanning project in the Giza pyramids has identified thermal anomalies, including one in the largest pyramid, built by Cheops, known locally as Khufu. (AP Photo/Nariman El-Mofty)

    French architect Jean-Pierre Houdin, right, and Egypt's Antiquities Minister Mamdouh el-Damaty, second right, stand near the limestone rocks that are displayed on the screen showing varying temperatures represented by different colors with live footage from a thermal camera, in front of the Khufu pyramid in Giza, Egypt, Monday, Nov. 9, 2015. Egypt's Antiquities Ministry says a scanning project in the Giza pyramids has identified thermal anomalies, including one in the largest pyramid, built by Cheops, known locally as Khufu. (AP Photo/Nariman El-Mofty)  (The Associated Press)

  • Members from a French research team use a thermal camera, center, to detect varying temperatures of the limestone blocks during a press conference, in front of the Khufu pyramid in Giza, Egypt, Monday, Nov. 9, 2015. Egypt's Antiquities Ministry says a scanning project in the Giza pyramids has identified thermal anomalies, including one in the largest pyramid, built by Cheops, known locally as Khufu. (AP Photo/Nariman El-Mofty)

    Members from a French research team use a thermal camera, center, to detect varying temperatures of the limestone blocks during a press conference, in front of the Khufu pyramid in Giza, Egypt, Monday, Nov. 9, 2015. Egypt's Antiquities Ministry says a scanning project in the Giza pyramids has identified thermal anomalies, including one in the largest pyramid, built by Cheops, known locally as Khufu. (AP Photo/Nariman El-Mofty)  (The Associated Press)

Egypt's Antiquities Ministry says a scanning project in the Giza pyramids has identified thermal anomalies, including one in the largest pyramid, built by Cheops, known locally as Khufu.

The ministry says in a statement Monday that the first phase of the scanning has shown "a particularly impressive one (anomaly) located on the Eastern side of the Khufu pyramid."

The thermal scanning was carried out during sunrise, as the sun heats the structures from the outside, and then during sunset as the pyramids are cooling down. The speed of the heating and cooling phases was used to uncover "hypotheses" such as empty areas in the pyramids, internal air currents, or different building materials used.

The structures are over 4,500 years old.