Falls back again before the Egyptian sun god (7)

I believe the answer is:

niagara

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'falls' is the definition.
(Niagara Falls)

'back again before the egyptian sun god' is the wordplay.
'back' says the letters should be written in reverse.
'before' is a charade indicator (letters next to each other).
'the egyptian sun god' becomes 'ra' (I can't justify this - if you can you should give a lot more credence to this answer).
'again' written backwards gives 'niaga'.
'niaga'+'ra'='NIAGARA'

Can you help me to learn more?

(Other definitions for niagara that I've seen before include "North American waterfalls" , "River linking Lakes Ontario and Erie" , "Famous waterfalls" , "North American waterfall" , "Famous waterfall" .)

I've seen this clue in the Sydney Morning Herald.

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