Is your garden looking like this ?
It’s a field of brambles / blackberries. Garden left for a couple of years and needed some help.
Half way through.. Half of garden cleared roughly.
And finally the end result.
Blackberry roots have not been uprooted on this occasion. So many of them and soil is quite rocky so rotovating is also not a best idea. Plan is to poison all new growth as soon as it regrows.