Hardy natural plant for shady rock crevice?
I have a large rock with a crevice that's about a foot long and about 4 inches wide and 4 to 6 inches deep. I'm looking for a natural, woodlands plant that will tolerate full shade and is pretty low maintenance. We live in a wooded area and all of our landscaping has a natural look. A lot of the low, creeping plants I've seen suggested for rock gardens require full sun, so I'm stumped. Can anyone suggest a good plant?