Any discussion of Union League National begins with The Big Fill, a large-scale earthmoving effort — more than 1.6 million cubic yards in scope — that Fry/Straka created at the center of the 268-acre parcel. It rises to 78 feet above sea level, 56 feet above the original grade. However, its tendrils spread out hundreds of yards in half a dozen directions. The man-made ridgelines slowly but elegantly taper down, only to rise again and form new, smaller plateaus, from which other distinct ridge networks splinter off into the landscape.