On many of the Border Roads there are slopes covered with hollow-ways. These are sunken paths and hollows on a slope, perhaps leading up a hill or down to a ford. They range from gentle depressions to deep trenches of varying widths and are signs that people, stock, or even horses and carts have passed that way and eroded the ground. An initial depression attracts water after a rainfall; this flows down the slope causing further erosion and a vicious circle starts. If the going becomes too difficult the traffic will find another route, perhaps only a few yards away. When this happens, you end up with a braided set of paths up and down the slope.