Fig. 25.—Overlooking breached eastern lip of crater of Otara to scoria mounds beyond. Part of tuff-ring behind the mounds, and Tertiary sandstone hills of Maungamaungaroa Range in the distance. Fig. 26.—Part of scarp of Clevedon-Waikopua Fault. A small tributary of Hog Hill Stream at base of scarp is working headwards in Waitemata sandstone rendering the capture of Whyte's Creek imminent.