This is the bonus final cache related to the Adventure lab series of caches around the small town of Taihape. Gather the details as you complete the Adventure Lab and when complete you need to head to S39 40.ABC E175 48.DEF.
The Adventure lab can be completed here; https://adventurelab.page.link/9jst
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Final cache container is a berocca tube with log only, please BYOP, no room for swaps.