Preventing bank erosion for path in a "cutting"
I have just dug a path through a wooded bank to connect two areas which are at different levels. The path itself is made of compacted scalpings on top of a liner. The sides of the "cutting" are about 1 metre high at the deepest point. The soil is quite fibrous and dry as the path runs through a patch of woodland with brambles at ground level. Soil is already starting to crumble onto the path and, although the tree / shrub roots will presumably help hold the soil together, I am concerned that the vertical sides will erode and the surface of the path will therefore be covered with soil / mud.
Does anyone have a suggestion about how best to shore up the bare earth on the sides? As mentioned, it's a vertical cut so no chance of planting anything to stabilise the soil. There is insufficient space for mesh cages filled with stone (and I think that would be overkill anyway) but perhaps there is another solution? I am trying to keep costs to a minimum!
The path is about 10 metres in length.
Thanks in advance!