An extra for those completing Part IV of the Avon Venture adventure lab series following the Ōtākaro to the sea. I strongly suggest doing the previous ones - Parts I, II and III of the Avon Venture adventure lab series.
Use your phone's native QR code scanner to open this Adventure in the Adventure Lab® mobile app, or share the following URL:
Part IV Avon Venture Adventure Lab

You will find the cache at S 43° 3(E-C).CDD' E 172° 3A.ED(A-D)'
Good luck!
Update 15 Feb 2026: the area the cache is in is fenced off currently. You may be able to find another way to access it but I have not checked.