After clearing out some newly acquired land at the foot of our garden, most of which was waist-high in brambles using some guys we knew with heavy machinery, the brambles have started growing again (apologies for crappy phone camera pic):
That spot of soily land is about 1/4 of an acre, and a good majority of it contains bramble roots that exist more than a foot deep. The green bits you see are the brambles starting to grow back, and I was wondering, what would be the most effective way to remove it all?
Obviously manually digging out the roots is out of the question due to the sheer amount of labour involved, so I'm guessing some sort of chemical should be used.
Aside from "napalm" etc
p) Anyone have any personal experience/recommendations? 

That spot of soily land is about 1/4 of an acre, and a good majority of it contains bramble roots that exist more than a foot deep. The green bits you see are the brambles starting to grow back, and I was wondering, what would be the most effective way to remove it all?
Obviously manually digging out the roots is out of the question due to the sheer amount of labour involved, so I'm guessing some sort of chemical should be used.
Aside from "napalm" etc

