A gabion is a cage, cylinder or box filled with rocks, concrete, or sometimes sand and soil for use in civil engineering, road building, military applications and landscaping.
Reinforced earth with gabions supporting a multilane roadway
Gabions as X-ray protection during customs inspection
Bridge abutment with gabions
Bank protection made with mattresses
A cage is an enclosure often made of mesh, bars, or wires, used to confine, contain or protect something or someone. A cage can serve many purposes, including keeping an animal or person in captivity, capturing an animal or person, and displaying an animal at a zoo.
Spherical cage containing watermelons in Russia
A cage designed to contain small animals
Zoo cage
Aviary