If you’ve got a dark pic it’s always tricky to work out what’s in the shadows. Just by increasing the exposure you can see what lurks in the depths lol! I have just used my photo editor on my phone to lighten up this image so I can see what’s in the darkest areas. I’ll get an idea of what’s there and then revert back to my original photo. It means I can add a little detail into the darkest areas.