Terrace
	The colour change from lighter to darker material marks a bedrock, or strath terrace. The terrace was cut into the lighter, thinly bedded and dipping calcareous sandstone by lateral erosion of the stream. The darker material lying on the cut surface consists of sediments deposited by the stream when it was located at the elevation of the strath terrace. The stream has since incised to the level on which the people are standing, i.e. it has incised about three meters since abandoning its former level marked by the terrace.