Before a large flet(u and w)

You are at the end of the closely-spaced flets. The walls block you from any direction but west. One large flet above you looks as if its open door is an invitation to enter. All around flets similar to this one are scattered around the forest. But it seems very quiet and strange in this area, strange indeed.
The only obvious exits are up and west.
A shady-looking elf