Just before the Anna Ruby Falls Visitor Center, an unnamed tributary of Smith Creek flows beneath Anna Ruby Falls Road. This tributary forms a series of wet-weather waterfalls as it tumbles steeply into the Smith Creek gorge, losing a total of about 300 feet in elevation along the way. These waterfalls can only be reached with a steep, rugged bushwhack and are best left for hardcore waterfallers. 

For detailed directions, see page 190 in Mark Ozboyd's "Waterfalls of Georgia" guidebook.