a proposed wall or barrier of sand designed to stop desertification in Africa.

Well known architect, Magnus Larsson proposed an idea to limit the growth of desertification in Africa by creating a 3,728 mile wall of sand from Djibouti to Mauritania. This wall will help protect the trees that were also lined to prevent the desertification spread, known as the, "Great Green Wall". The sand dunes would be a source of shelter, shade, protection for the trees and the villagers, and water collection point.

These sand dune walls would be created by fusing sand grains together with Bacillus pasteurii, a bacterium found in wetlands that produce a natural cement material known as calcite. This cement material would hold the sand together, and keep it solid

23 Countries in Africa decided to use sand dunes into shelter from sandstorms. These barriers are made from nature- bacteria and sand. This wall will help the villagers living in these harsh conitions with shelter, shade and a place which keeps them safe from the storms above. The price of making this shelter would be $90/cubic meter, for the cement, sand, gravel, and water.

Larsson's image is more than just a physical wall, but atempts to make it beautiful and artistic. Acting as both a wall and barrier, this desertification prevention project will hope to commence shortly, as desertification is becoming more of a concern worldwide.