Scything tough weeds on slopes

I’ve been scything in Lancaster city this summer, cutting the grass and other vegetation from the earthworks around the Castle. Some of the areas have been seeded with a wildflower meadow seed mix, others are rank grass and some like in the photo are rougher. Here I was scything a mixture of brambles, hogweed, rosebay willowherb and other tough weeds on a slope. Hopefully you can make out the clock on the church tower- 1 hour to clear the area.