Hi mate,
I no how your feeling, Ive been there before myself gone a couple of months of not seeing much at all on one of my permisions.I was thinking a bit like you are now wondering where every thing has gone so I started going up there at all kinds of different times of the day and night. I found that all of the quarry were still there but they were staying down the holes or very well hidden during the day then coming out at night.. Which is a bit strange considering we never used to see much at night up there it always used to be better in the day.So if I were you I wouldnt throw in