From Pretoria take the N4 toward Witbank.
take the Cullinan / Rayton offramp
turn left at the offramp towards Cullinan / Rayton
Stay on this road fro 25 km, pass Cullinan (do not turn into Cullinan)
When the tar road ends, continue for 4 km on the dirt road until you see the K113 Sign of Aves log cabin