What does みてみた mean here?

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    どう、教えたつり場には行ってみてみたー？
    
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Is it use to emphasize てみる?




みてみる is a set expression fairly equivalent in meaning to the colloquial
English: ‘look and see’ or 'check out'.

The first みる denotes basic physical observation with the eyes. The second
indicates an evaluation of what was seen.

Take the simple expression 見たいです. This means ‘I want to see (it). Contrast
this with the expression 見てみたいです. This would be closer to ‘I want to check it
out’ (physically observe and evaluate it).

> どう、教えたつり場には行ってみてみたー？
>
> How is it, did you go and check out the fishing spot that I told you about?

行きたいです I want to go 行ってみたいです I want to go (and check it out)

Just as the English word ‘see’ has different definitions, (to perceive to the
eye; to examine or watch), so does みる. Look can be considered in some cases a
synonym for see, but they both have different separate meanings. Hence, the
'look and see' expression makes sense and is not redundant.

