I need to extend a garden by about 10ft, which currently drops down a steep embankment to a lower level 12ft below. The width of the garden is about 20ft.
I could just dump tons of rubble down there, but then I will end up with a slope. I wanted to construct something which would retain the rubble to create a steeper drop.
An initial idea was to create a retaining wall by stacking 'grab-bags' which contained a dry mix of aggregate. I would do the mixing and loading with a mini-digger. I could then backfill with the rubble.
Building a retaining wall with bricks would be another idea, but I think it would work out more expensive in terms of materials and labour.
Any other suggestions?