Weeds in New Zealand are sometimes underrated as a pest. On Te Hauturu-o-Toi/Little Barrier Island weeding can mean some extreme antics, including abseiling off a cliff to get inaccessible weeds.
View the Extreme weed control video (4 minute clip on TVNZ video player)
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You can only view these videos if you are in New Zealand.
See "Receiving timezone error" on the TVNZ FAQ.