Strachan's Cave is a small historic cave on private land at Kaukatea Valley Road in Okoia, near Whanganui. Reviewers say it is not advertised, and describe it as a hidden gem off the beaten track. One says the cave was built more than 100 years ago. Visitors are asked to be mindful that it is on private land, and to hop over the wooden stiles to reach it.
Children especially enjoy letting their imaginations run in the dark, echoing space. One reviewer who has lived in Whanganui all their life only found the cave a few days before writing, and found its history interesting. Another asks visitors to be respectful. Our pick near Whanganui for an unusual outing with children.