Nearly finished the other 60ft one, took me about 10-12hrs to dig out by hand 2 n half ft deep,a couple of hrs to drop pipes in and fill bottoms with soil,then spent about 6hrs today back filling and putting turfs back,just got to do the boxes now,should be a good one this,made it quite intricate and a bit testing for the dogs,i took some pics of the dig out but forgot to take some of the rest.Its next to a free range chicken farm this one too so i reckon could be quite productive,i'll keep you posted