http://www.english.hadhramaut.info Wadi Dau'an [The Source: - ] Wadi Dau'an There are several branch wadis in Hadramout such as Wadi Dau'an, Al Ayn Wadi and Amad. Dau'an is considered to be the most important and famous of all since there are many attractive villages along both banks of the Wadi, which are  considered excellent examples of architecture in Yemen.