Love how nature is taking over and turning this rugged area back to a colorful wonder! Nice composition and lines. I could only suggest dialing down the saturation on the green color channel a bit to see what that does, but the color really does pop! The red, rusty tracks are really complimented with the green grass.
I really like the scene but not the processing. Greens and blues are oversaturated and I'd like a little more detail. Maybe darken the sides a bit as well. There's a 7 in here somewhere.
I like this - the composition is good, interesting scene, nice color. The focus seems a little off though, being in the middle. Seems to stop your eye there instead of moving it through the scene (IMHO)