Ruins of Kilwa Kisiwani and Ruins of Songo Mnara - UNESCO World Heritage site. Includes photographs, maps and a description of the site. Stone Town of Zanzibar - UNESCO World Heritage site. Includes photographs, maps, a description of the site and a statement of significance. Kondoa Rock-Art Sites - UNESCO World Heritage site. Includes photographs, maps, a description of the site and a statement of significance. Tanzanian Dig Unearths Ancient Secret - From the BBC, an archaeologist finds evidence that prehistoric East Africa was part of a greater Indian Ocean community. Ostrich Beads Indicate Early Symbolic Thought - From New Scientist, ostrich egg beads and numerous other artefacts, including ochre pencils, carved bone and stone tools, were recovered from the Loiyangalani River Valley, in Serengeti National Park. Kilwa Kisiwani - Provides information on the 16th Century ruins of medieval buildings all over the island. This was the trading center linking the Arabia Gulf, the Far East and mainland Africa.