Gabion walls generally do not require traditional deep foundations like concrete footings, but they do need a properly prepared base or footing to ensure stability and prevent settling or shifting. Key points include:

1. Base Preparation: The ground where the gabion wall will be installed should be leveled and compacted. Sometimes a layer of compacted gravel or crushed stone is placed as a stable, well-draining base.

2. Drainage: Proper drainage at the base is crucial to prevent water buildup behind the wall, which could cause pressure and instability.

3. Wall Size and Height: For low to moderate-height gabion walls (usually under 1.5 to 2 meters), a well-prepared compacted base is often sufficient. Taller or heavily loaded gabion walls might require additional structural support or engineered foundations.

4. Soil Conditions: In soft, loose, or highly unstable soils, more substantial foundation measures might be necessary to prevent settlement.