I've travelled the East Tamar Highway my whole life and never knew what this little inlet was called until today. After placing this cache I did some research and found out it's called "Forteen Mile Creek. This pipe is the main water supply to George Town (this little town has a good amount of caches!!).
There are some blackberry bushes around, but shouldn't be too much of a hassle.
Please replace 'nano' as found, happy hunting :)
There is parking very close by, access to cache is via Archers Road on the East Tamar Highway.