Caching as caching should be!
First I was on the wrong side of the river; than on the wrong side of the creek. When reaching the target area, the whole ground was covered with frozen leaves and a thin layer of snow - no chance, to see anything. After some useless searching near the trees I grabbed a stick and started poking around - than after only two minutes a promissing PLONK! There it was, in the middle of nowhere; but in good conditions!