There was a somewhat secretive meeting at Cableways restaurant last week of people who have been playing a slightly different version of Pokemon Go for years.
Welcome to the fun, free and family-friendly world of geocaching, where finding hidden caches using global positioning system technology is the name of the game.
"Pokemon Go is making geocaching cool again,'' geocacher and secondary school teacher John Hayden (35) said.
The Dunedin geocaching community is small, obsessed and populated by people from all walks of life.
Richard Nyhof (52) is a lecturer at Otago Polytechnic by day and a geocacher the rest of the time.
About 10 years ago, a friend mentioned geocaching and one day when he was bored, he went on a geocaching website to see what it was all about, he said.
Mr Nyhof did a bit of reading, bought a cheap GPS unit and never looked back.
These days, all anyone needed to start geocaching was a smartphone, he said.
Geocaching could be done independently or as a family activity, he said.
Student CJ Marland (26), originally of Australia but now living in Dunedin, said there were different kinds of caches - traditional, where a container was located at certain co-ordinates; puzzles, which had to be solved to find the cache; and multi-caches, where each cache led to another.
Each cache contained a logbook for the finder to sign and sometimes there were small trinkets to trade, he said.
Mr Marland said once a cache was found, the finder signed the log and returned the container to the location where it was found.
"It's a fun, inexpensive hobby that takes you places, with a fantastic, welcoming community.''
PhD student Nikki Lloyd (48) is a dedicated geocacher who thinks nothing of going out at 10.30pm if the location of a new cache is published.
She also enjoyed geocaching with her mother (75) and father (78).
Debbie Pettinger (46) has been geocaching for about four years and said it started out as something to do when her children were young but now it was an "obsession''.
August 20 is International Geocaching Day and Dunedin geocachers will be celebrating with a meeting at Emerson's Brewery, at 10am. Anyone interested in finding out more about geocaching is welcome to attend.
- Tenoch King
