Putting UP a big wall. 6,000 km along the Sahara.

BLDG BLOG: SAND/STONE

Clarifying the biochemical process through which his project could be realized, Larsson explained in a series of emails that his “structure is made straight from the dunescape by flushing a particular bacteria through the loose sand… which causes a biological reaction whereby the sand turns into sandstone; the initial reactions are finished within 24 hours, though it would take about a week to saturate the sand enough to make the structure habitable.”