Cooling water loss on the front cover of the camshaft

Hello, I would need your swarm intelligence. My vehicle loses water, it collects directly under the front cover of the camshaft. I couldn’t find a damp spot above the lid, so I can rule it out from above. However, in my opinion, no water can come out there. A camshaft is not cooled after all. Since we have been having bad weather for a few days, I don’t want to lie down and unscrew the lid. Have the water cleaned dry and it immediately collected again on the red seal (red pile). What is the “cover” (yellow arrow) where the front cover is screwed on it? Do I have the hope that I did not look correctly and the water came from there. Unfortunately, this only came to my mind afterwards so that I am not sure what is installed there. Is this the cover for the timing belt or control chain? Does cooling water run through at the place? That would probably be a too big construction site for me in the weather. I would like to thank you for your efforts Many greetings Christian