Was he aware of the local aboriginal legends that related to his property?
Armchair Critic,
I tend to agree with your thinking on this. In this day & age he should have been able to contact his local Council & in one or two phone calls the whole thing could have turned out much better.

If there were to be a register of sacred sites, such incidents can be prevented in future.

Great idea Indy.

I suppose I was more concerned with the concept that he was beholden, via the law, to a fairy tale.
People can have their 'firm', if erroneous, beliefs, but they should not expect others to think the same.
This is not Rome.
I am worred that the Thee Billy Goats Gruff or Hansel and Gretel might make a comeback.
And what would happen if we consider beanstalks to be populated by giants?
Time to stop making up stories about the natural world?
And worse: reinforcing those stories with laws.

It is totally irrational that a small group of people with a totally irrational myth should be able to prevent a private land holder, on land he has bought & paid for, being able to build an all weather access to his home.

Time to stop this nonsense. God help us if the voice gets up. How many bridges on major highways would have to be demolished?

It is worth remembering that the land owner repaired the crossing in previous years.
This time he simply made a better job of it.
It was a better repair, not a brand new crossing.
The rainbow serpent clearly didn't object to his earlier efforts.
He likely favours this one too?