Dawn also notices that behind the vines on this wall is an intricate mural, set into which are small gems. Nap is rubbing her body against a small ruby set against the bottom of the mural. As you look around, you see that all of the walls have a similar mural, but this one is the only one set with gems. If you'd like to clear away the vines for a better look, you may do so.
Sleepnear pushes to no avail. You get the feeling that this is not a wall that can be easily opened by brute force alone.