Florida’s “Alligator Alcatraz” immigration detention center can stay open and is not subject to an environmental review, an appellate court has ruled.

The U.S. Court of Appeals for the 11th Circuit upheld on Tuesday its prior decision reversing a federal judge’s August order to phase out the facility. Alligator Alcatraz can now remain open and is not required to undergo a National Environmental Policy Act review, barring further court proceedings.