 According to an article published by McClatchy-Tribune Business News, "ever-growing piles of muck from widening U.S. 1 north of Key Largo could be used to fill in a gaping hole in the Crocodile Lake National Wildlife Refuge".The muck from the construction of the highway will most likely be used to help fill in the hole on the refuge.The main purpose of re-filling the hole is to populate the hardwood hammock by planting native vegetation in the area.