2010 CX-9 Oil leak from a pinhole - Need help to identify

Dear Mazda team,

My 2010 CX-9 @ 195,000mi suddenly leaked oil this week, steadily at 1 drop per 2-3 seconds as the engine running and I caught it when the oil level dropped to 1-2 quarts and made a lot of smoke when I stopped as the oil splatter everywhere to the hot exhaust lines while on the road.

In the picture below, looking up from under the car, through the opening slightly further back from the oil pan, the oil leak apparently coming from a tiny hole (pointed by the red arrow) on the flat shiny metal surface about 16-20 inches high from the bottom of the car and symmetrically placed between two bolted black iron pieces that you can see there. The pinhole looks like a spot weld or purposely made hole.

Can anyone help identify the name of that area/pinhole, and what happened so that I can communicate the problem to the mechanics. I hope it's not a big one problem and I can get an honest mechanics that can solve it quickly.
Thank you all in advance for any input or even spending time to read

2015-01-13 oil leak.webp
 
Are you sure that the oil is not coming from higher up on the engine? The reason I ask is that is the cylinder head you are looking at and the likely hood it developed a pin hole is pretty remote but it is possible. Higher up on the engine you will have the valve cover for that head and they can be prone to leaks over time. That would cause the oil to drip down to that spot. Either way, that's a pretty significant leak and a competent shop will find the root cause.
 

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