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 West Africa competing". A number of smaller regional championships have been held in Africa: the East African Cross Country Championships and the Maghreb Cross Country Championships in North Africa are both well-established competitions. West and Central African competitions have also been held in past years. African Cross Country Championships The African Cross Country Championships is a regional cross country running competition for athletes from Africa. The competition had a one off edition in 1985 in Nairobi, Kenya, and the medallists were mostly from the host nation. Following an announcement by the International Association of Athletics Federations (IAAF) that the IAAF