geocell
The material on the ground in the image is known as a geocell or ground grid stabilizer. It is a three-dimensional, honeycomb-like cellular confinement system made from ultrasonically welded high-density polyethylene (HDPE) strips. Often used for erosion control on slopes and to stabilize soil or gravel in areas like driveways, pathways, and patios. When installed on hillsides, it prevents soil migration and allows for vegetation growth within the cells. In industrial or transit settings, these grids are frequently filled with gravel or aggregate to create a stable, permeable surface that can support heavy loads while managing water runoff. (Kremer, 2026) Photo from St. Louis, Missouri, 2026.