United States of America

It does not look photoshopped, if there is no trick here:
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but at this point I think it is the pond under the Pinnacle Peak, so I move the pin.

It seems like it has to be some sort of alpine pond/lake in that area (if that is real and not photoshopped of course)

It looks like a pond just north of the Reflection lake.
View from South (Pinnacle Peak):
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Typical view from the reflection lake:
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