My vote for most atmospheric Lair-Post goes to
Aman!
That having been said, don't anyone get carried away and have Shelob come at the group quite yet. . . (Yeah, I'm looking at you
Kransha and
Himaran 
)
Never fear, she'll be making her appearance, but she's got some plans to make, some webs to spin, and some traps to lay first.
Be afraid, be very afraid.