It does seem just a wee bit dark but with all that's going on, both in the clouds and on the ground, it's a grabber for sure. The kind of image that you keep coming back to...and finding new things.
This has a lot of promise, like others I think it is a bit dark and not quite optimal on contrast. I suspect this would make a wonderful B&W conversion where you can do more dramatic things with tones and not worry about breaking the color. Good composition!