#4
North Beach is a great long stretch of beach to help you unwind. You would think you were the only person in the world due to its very low muggle usage. It is a 4WD beach so keep an ear and eye out for travellers.
The two towers to the West of the beach are for a local AM radio station. The 'Top Hat' helps them to radiate further distances, so the top is the radiator for the signal. Some also build on swamp land for better isolation of the masts.
I like to walk along this beach and let the world go by without a worry! The Cache is up in the dunes so you will be more away from prying eyes. In amongst the bushes the cache is a camouflage medium tube with a log and pencil in it. Enjoy your walk and Slip, Slop n Slap on a hat, bring poch for a walk! 
More precise coordinates
S30° 28.4773 E153° 02.4567
F1T