The elemental silently nods to Dot and disappears into the wall where the ribbon leads. While she waits, Dot examines the wall spot, quickly finding that there is a secret door there. A few more moments of searching reveal a clasp to release it.
At that point, the elemental comes back through, replying to Dot in the tongue of the earth
@Dot, and those who can speak what language earth elementals speak
SpoilerA passage leading east from this door. It continues for about 90 feet east. There are two branches off it to the north