Deep Forest Door
The password for the door is based on the Lord of the Rings Door of Durin riddle.
Pedo Mellon a Minno in LoTR, translates to :Speak, friend, and enter. mellon is 'friend', so the password is "mellon"
A thing there is whose voice is one;
Whose feet are four and two and three.
So mutable a thing is none
That moves in earth or sky or sea.
When on most feet this thing doth go,
Its strength is weakest and its pace most slow.
It's a copy of "Oedipus the King, by Sophocles" that the Spinx ask's the hero.
The answer is "man" but you need to spell it "Man"
This all things devours:
Beasts, and trees, and flowers;
Gnaws iron, and bites at steel;
Grinds the hardest stones to meal;
Slays king, and ruins town,
Beats the highest mountain down."
The answer is "Time"
A house there is. One enters it blind, yet comes out seeing.
The riddle is one of twenty-five known Sumerian riddles etched on a clay tablet discovered from Sumer. The riddles were translated by E.I. Gordon in 1960.
The answer is "School"