• Gravelpave2 from Invisible Structures is a porous paving system that holds gravel in place without sacrificing drainage. Shown here at the Pentagon Memorial, the system keeps the gravel in place and is stable enough for rolling a wheelchair or driving a truck on top. Available in black, tan, gray, and terra cotta. 
3'-4 x 3'-4 or 1'-7 4/5 x 1'-7 4/5 units
invisiblestructures.com
    Gravelpave2 from Invisible Structures is a porous paving system that holds gravel in place without sacrificing drainage. Shown here at the Pentagon Memorial, the system keeps the gravel in place and is stable enough for rolling a wheelchair or driving a truck on top. Available in black, tan, gray, and terra cotta.
    3'-4" x 3'-4" or 1'-7 4/5" x 1'-7 4/5" units
    invisiblestructures.com