Marahau to Tinline by Project Janszoon Education

This is a series of 3 eco-caches along the Coastal Track between Marahau and Tinline. We actually encourage you to skip cache 1 on your way to Tinline, and search for it on your return to Marahau because the cache is not located at the traps (traps are closer to the start of the track than the cache is).


Cache 1: Super Trap!      

S 40° 59.486' E 173° 00.770'



Trap A3: S 40° 59.523'  E 173° 00.690'

Trap A2: S 40° 59.512'  E 173° 00.626'


Cache 2: It's About Kai   

S 40° 59.423' E 173° 01.303'


Cache 3: Bzzzzzzzzz!      

S 40° 59.397' E 173° 01.469'


You don't need to do all of the eco-caches - and it doesn't matter what order you do them in, either!



Big, heartfelt thanks to the Abel Tasman Birdsong Trust for helping us with the data for cache #1 and to Aneika Young from Te Atiawa and Ngati Tama for her input on cache #2.



  • You will need a GPS  or a GPS app downloaded to your phone or tablet. There are many free options out there for both Apple and Android phones. Using a GPS does not require you to be connected to wifi or data - but it does require you get a signal from satellites (not the same as a mobile signal). Sometimes you have to wait for the satellites to move around and connect with you, but it will not use your data. And you don't need to be in a place with wifi access.
  • You should consider signing up for a free (or premium) account on This is not a requirement, but can be a fun way to log your finds and track over time. It can also make it possible to load cache coordinates on your phone or other device.
  • You can download a copy of this information (pdf document below), if you don't have a account - or just in case your device isn't getting a data or wifi signal (the site only works if you are using data or wifi - so you need to ensure you have the list of coordinates and hints before you get started).
  • Muggles are non-geocachers who might be out and about while you're looking for a cache. Geocachers are a secretive lot. You're not meant to hunt for a cache when others are around - and many will take the cache away from the spot where they found it before opening, etc., to keep the hiding place secret. Sometimes this means waiting while people pass - even for quite a while if you're at a spot where other trampers want to stop and look around or rest nearby. We encourage you to follow these norms and be secretive when finding, opening and re-hiding our eco-caches.
  • You may want to consider your guidelines for finding caches before you get started - especially if you're walking with a big group of students. Maybe one small team of up to 4 students leads the search for finding each cache? A different group finds each cache, perhaps.
  • When you get there, you'll find one Eco-cache card inside to look at and read. If you would like to print additional cards (to pull out of your pack once the cache is found), you will find the pdf files here. Why would you do this? It would allow multiple groups of students to look at and read the information at the same time, versus just one.
  • There is also a quiz you can download here to extend the experience. A favourite time for quizes is at night around the campfire, but you can use it whenever you like!


We would love to hear from you about your experience with our eco-caches. Email us here. If you include photos, we'll even post some (with your permission) on this web site, or share them with our partners such as DOC or Abel Tasman Birdsong Trust.