The answer to 'why is my stone walkway erosion' is that stone walkways can experience erosion due to a variety of factors, such as heavy foot traffic, water runoff, and freeze-thaw cycles. Symptoms of erosion may include uneven surfaces, loose stones, and visible gaps between pavers.
Common causes of stone walkway erosion include inadequate base preparation, poor drainage, and lack of regular maintenance. Over time, the soil beneath the walkway can become compacted or washed away, leading to sinking and shifting of the stones. Heavy rainfall or melting snow can also contribute to erosion by washing away the fine gravel or sand that holds the stones in place.