leak in cargo area - ? ?

[kash]

I fixed my rear seat leak (vapor seal problem), and after a few days of heavy rain I was cleaning out my cargo area and inside the compartment in the right cargo area behind where u fill in gas I noticed it to be very very damp as outlined in the picture below. Where could this leak be coming from?


Also do those rear lights stay on while the car is off in picture 2?

thanks all for the help