Slope of the underlying materials effects bank stability
Loose sediment over bedrock, resulting in a slip plane
Look for signs of slope creep in the vicinity of the retaining wall
Trees growth pattern as a result of slope creep
Look for signs of slope movement in your neighbourhood
Fence or building lines that are not straight due to land movement
If you suspect that your site may be prone to slope creep it is best to consult an specialist enginnering geologist or a geotechnical engineer prior to construction of your retaining wall.