The last 3 times I have gone to Croom I have ridden off the trails just cutting through the trees, It is amazing how many old trial are out there that are covered w/ pine needles and leaves which takes most of the dust out of the picture.
As for the Shrine, Right now the easiest way t find it is go north of the camp grounds till you hit the north Fence, Someone marked the fence w/ a pink girly bag, when you see the pnk bag head due south and you will see the shrine. Probably 150 yards or so from the North fence by the way the crow flies.
....I used to never find it while looking for it, you just have to cover a lot of ground and you will stumble right on it.