The Treur River plunging into the Blyde River has caused waterborne sand and rock to create huge potholes, some six metres deep, into the bedrock of the river. This natural water feature is known as Bourke’s Luck. There is a well-developed picnic area here and a series of walkways and bridges that enable visitors to get great views of this amazing geological feature. Another attraction at Bourke's Luck is the visitors' centre, which has numerous interesting displays. A newly developed, 180 m circular trail, accessible to the physically disabled, starts at the visitors' centre and has as its main theme the lichens found in the area.