There is currently very little weeding to be done on the pits, but many of the “weeds” are very hardy and thrive in bad soil.
Pictured above is the type of vine that had overgrown the whole area last year. Now little remains, but some runners and the roots. I don’t know what this plant is called, but it has very strong and hardy roots which make raking almost impossible since the rake gets stuck on the roots. So ultimately the roots have to be cut. Not a hard task in itself, but since there are hundreds of these plants in the pit, it needs to be kept up with.