Nice image, but the shadow underneath is too strong for the environment. It is an overcast day, with no clear light source. The ambient lighting makes for softer shadows, look at the stick on the LH side and the bend at the end of the road...

very lovely image.. I come from there.. (Northern Wisconsin.. all snow and lots of snowmobiling fun )

The narrow color palette is dramatic. I don't see any shadow at all, however, but I agree with MossyB that it would be a weak one. The skull in the precise middle of the path—not to mention near the center of the image—is kind of boring. The Rule of Thirds could help amp up the impact.