We want to extend our patio that is currently about 10 x 5 feet to about 10 x 10 feet.
Problem is there is a slope where the current patio ends. The next 5 feet has an approx. 1 foot deep slope.
My worry is that if I build a retaining wall and compact the newly filled slope, the compaction will destroy the retaining wall.
What would be a strong enough material that can withhold the compaction and the 1 foot deep filling?