Association la Voûte Nubienne - AVN, is a group whose motto is “Affordable, sustainable housing for as many people as possible, as soon as possible”. The group is dedicated to the construction of Nubian vault structures. AVN’s mission, "In sub-Saharan Africa, the struggle to obtain decent housing plunges millions of families into a vicious circle of poverty. Association la Voûte Nubienne (AVN) offers a solution to this problem, based on three integrated concepts: A roof + a skill + a market. AVN organizes the training and support of local teams to promote this solution on a large-scale. As a result, families can acquire affordable, sustainable, and decent housing, at the same time improving their economic conditions, their quality of life, and their environment.” Well.. that just sounds like a “win- win” situation… and in reality it is. “Nubian vault construction uses local skills and labor and renewable materials for sustainable low cost homes and other buildings. They are environmentally friendly and far cheaper, more comfortable and longer lasting than the widespread, but expensive and sub-standard cement block, metal roofed buildings. NV building creates jobs, reduces poverty and releases scarce resources to go to improved nutrition, health, education, and capital for improved economic productivity.” The web site has videos and numerous galleries. The group addresses this importation of western materials by saying, “People in rural areas have to buy sheet metal (corrugated iron), sawn timber beams and rafters for roof-building. These imported building materials, with their deplorable thermal, acoustic, and aesthetic properties, must be paid for in cash, a problem for those living mostly outside any formal economic system.” You can not be more sustainable than using soil right on site. It also brings up the issue that these materials are expensive to import and they do not perform as well as vernacular ones for insulation, sound and beauty. This is a great organization and the web site is well done with a lot of information.