Do not go to the posted co-ordinates. you will need to solve the puzzle below. Please note there is no phone signal out where the cache is, you will need to solve the puzzle before you go to the area.
I have been fasinated by the Rosetta Stone since I was little and I spent many of my weekends at the British Museum. You won't need to get a copy of the Rosetta Stone out to solve this cache. There are a number of websites and books which will help you find the co-ords.
For information; you can find out the guidelines for Geocaching and Covid-19 in New Zealand. https://wiki.groundspeak.com/display/GEO/New+Zealand . Please do not find this or any other geocaches during Level 3 or 4.