Rice-hull bagwall construction
Rice-hull bagwall construction is a system of building, with results aesthetically similar to the use of earthbag or cob construction. Woven polypropylene bags (or tubes) are tightly filled with raw rice hulls, and these are stacked up, layer upon layer, with strands of four-pronged barbed wire between.
Source: Wikipedia — Rice-hull bagwall construction (CC BY-SA 4.0)