Yard under pine tree
This sounds like an ideal place for Azaleas. It's moist, it's shaded, and pine needles acidify soil, so this spot seems to have a lot going for it for azaleas. Most shade perennials should do well there too. Hostas, astilbe, heuchera, columbine, bleeding heart....all these will probably thrive there. Tear out any lawn, till in peat, plant the shade lovers, and you should have nice shade garden.