Photos clockwise from bottom right: cathedral at Ani, Turkey; wall painting at Pompeii; panorama of Tipasa, Algeria; figurine from Catal Hoyuk, Turkey; chamber in the tomb of King Tutankhamun; and statue of King Khasekhemwy from Hierakonpolis. Design by Robert Sugar.

Time is indeed short forArchaeology Odyssey’s 10 Most Endangered Sites,” threatened by neglect, the elements, tourism, plunder or development. Important small sites, like Tipasa in Algeria, may be swallowed up by growing populations, while vast sites, like Pompeii, simply cannot be preserved in their entirety.