Dry stone walling is a fabulous and beautiful way to level your growing areas on slanting land. Or an even cheaper method would be to make walls like you did yesterday in cages to stop the ground slipping away from you - less man hours in the long term than moving earth but I can see you needed some top soil else where for now anyway so all good work - and I see monster truck is monster big help these days too🤗 ️🌈🍀🌴🦋