Reservoir re-housed, historical artifacts moved or rare environments relocated. Examples include the temples of Abu Simbel (which were moved before the construction of the Aswan Dam to create Lake Nasser from the Nile in Egypt), the relocation of the village of Capel Celyn during the construction of Llyn Celyn, and the relocation of Borgo San Pietro of Petrella Salto during the construction of Lake Salto. Construction of a reservoir in a valley will usually need the river to be diverted during part of the build, often through a temporary tunnel or by-pass channel. In hilly regions, reservoirs are often constructed by
African Cross Country Championships sport's top competitors come from Africa means that the top runners at the World Cross Country Championships, especially in the men's section, are largely the same ones which would form the field of an African Championships – at the 2009 IAAF World Cross Country Championships the top 25 finishers in the men's race, and the top 12 in the women's race, were all African-born. Commenting on the dominance of the competition, IAAF president Lamine Diack said that the competition had "become not only an African affair but an East African affair, and these days you don't even get athletes from