Kelly's Cave lies in woodland 500 m (1,600 ft) northeast of Cong. The cave is about 16 m long and consists of two rectangular chambers and a hole in the roof which acts as a skylight. Four steps lead down to an underground stream, and benches have been carved into the walls. The entrance is blocked with an iron gate. The path to the grave (about 160 meters) is very impressive too - large stones (coverd with moss) stand and lie along the path.