A long sliding-type waterfall about 80 feet high, Raven Cliff's Big Sister Falls lies along an unnamed southern tributary of Dodd Creek flowing from Whitley Gap, directly to the south of Raven Cliff Falls. Reaching Big Sister Falls requires a quarter-mile off-trail bushwhack up the steep tributary from the Raven Cliff Falls Trail. 

For detailed directions, see page 162 in Mark Ozboyd's "Waterfalls of Georgia" guidebook.