Hi, is the search function not working?

I woke up singing Gunga Walk (life long Spinners fan), and thought I'd look up the lyrics. Most results are a Clint Eastwood version, which got me thinking of the song's history - surely he didn't write it?

So can anyone help me with the lyrics, or the history of this classic folk song, or point me at the thread that's already covered it?

Thanks.
Peri