The U.S. Department of Agriculture said the ring was in McDowell in Floyd County.
Investigators said the ring had arena style seating, multiple pits for fighting and a restaurant.
On Thursday, Joshua Dale Stumbo, 25 and Walter Dale Stumbo, 51, pleaded guilty and admitted they had conspired to sponsor or exhibit an animal in a fighting venture and conduct an illegal gambling business, according to prosecutors.
The two also pleaded guilty to involvement in possessing and transporting roosters across the state line from Virginia to the Big Blue club and transporting gaffs across state lines, according to prosecutors.
The two were scheduled to be sentenced in October.