At the posted coordinates you will find a sign for Portobello which tells you about the history of the area.
Kāi Tahu, Kāti Mamoe and Waitaha have strong connections with Muaupoko (Otago Peninsula). They lived adjacent to the harbour and estuaries traversing all parts of the peninsula. A principal site was Pukekura (Taiaroa Head) where there was a strong defensive Pā for many generations.
In 1842, Walter Christie set up as a general dealer at Latham Bay and called his house 'Portobello' after his Scottish home town. The name was eventually applied to the township.
Source: sign at posted coordinates
Gather the information from the sign to work out the location of the cache.
S 45° AB.CDE′
E 170° FG.HJK′
A = Broad Bay is 3.A km
B = Otago Peninsula Museum is 2B0m
CDE = Visitor Information 03 474 3CDE
F = Fletcher House is F km
G.H = Larnach Castle is G.H km
J = Clarks Hill is J05m
K = Dicksons Hill is 1K2m
Bring your own pen
Checksum A+B+C+D+E+F+G+H+J+K = 34