Came across wild animal crossing park, going west (3,4)

I believe the answer is:

lit upon

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'came across' is the definition.
The answer and definition can be both to do with ownership as well as being past participle verbs.
Maybe you can see a link between them that I don't see?

'wild animal crossing park going west' is the wordplay.
'wild animal' becomes 'lion'.
'crossing' is an insertion indicator.
'park going west' becomes 'tup' (I am not sure about this - if you are sure you should believe this answer much more).
'lion' placed around 'tup' is 'LIT UPON'.

Can you help me to learn more?

I've seen this clue in The Hindu.

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