Unable to answer "How is this power line attached?" – Power Pole – node/4586757143 via StreetComplete 61.1:

Supported from both sides and bottom.

Attached photo(s):
https://streetcomplete.app/p/289645.jpg

This area is now called Powerhouse Place and was opened in 2024 after undergoing extensive rebuilding.
Features
Function Tables and Chairs
Grassed area
Meeting Tables and Chairs
Meeting Rooms
Parking
Public Address System
Toilets
WiFi

deleted

Unable to answer "How is this power line attached?" – Power Pole – node/4586756308 via StreetComplete 61.0:

Half supported from the bottom and half supported from the top

This is not a campground, it's a manufacturer of standalone cabins for sale and transported elsewhere.
None of the cabins are complete or have services connected.

via StreetComplete 61.0

Attached photo(s):
https://streetcomplete.app/p/278484.jpg

More photos of cabin manufacturer

via StreetComplete 61.0

Attached photo(s):
https://streetcomplete.app/p/278485.jpg
https://streetcomplete.app/p/278486.jpg

WTU Pty Ltd
https://www.wtuptyltd.com

via StreetComplete 61.0

Lascelles campground

via StreetComplete 61.0

Attached photo(s):
https://streetcomplete.app/p/278487.jpg

Weighbridge, all markings are unreadable.

via StreetComplete 61.0

Attached photo(s):
https://streetcomplete.app/p/278483.jpg

Just lights, pretty common for rural Victoria.

via StreetComplete 61.0

Attached photo(s):
https://streetcomplete.app/p/278498.jpg