Basalt walkway with decretive pebbles. Basalt concreted into place at each level. I used the Carrissa desert, Mini mono and mini min only planted small but will grow in a fill in the space before to long. The mini min will be shaped to accentuate the flow of the natural pathway. Still looks very raw but when plants grow it will be great.
Stairs after, because of the drop I did build in concrete block work under the stairs to hold the whole area together over time.