To get here hang a left at the Hikuai gas station (small road with a 1 way bridge) and another at the bigger bridge. Continue along the road right to the end. Thats Puketui valley road.
Walk the many tracks around the area with attractions such as old mine shafts, tunnels and caves, waterfalls, water-races, and others!
Stay for just $10 a night for adults and $5 for kids. Your top dollar pays for the services including river water (boil for drinking or just shower, bathe and swim), the long drops and the grass.
DOC website here http://www.doc.govt.nz/parks-and-recreation/places-to-stay/conservation-campsites-by-region/coromandel/broken-hills/
Cache is a little tube in camo. No need to remove the tube, just open the lid.
GPS is a bit iffey so the cache is on the fenceline between dunny and the car park on the road.