Need excavation for a horse arena in Colorado? Look no further…we’re the experts. We’ve built a zillion of ’em! We know what to do and how to do it so your horse will be happy and smooth-riding. We recently finished another large outdoor arena out here in Franktown. The footing is two and a half inches of washed concrete sand and (as you can see from the photo) – it’s smoother than a beach and super-soft on those horse footsies.