He did not enter the valley from the south.
You must enter the deepest valley of your own perception.
Man, I have not even seen my own face in front of me since entering the valley.
My people killed some of your party as they were about to enter the valley.
"He may be among those even now entering the valley, but we did not see him."
Once you enter the upper valley, you're on your own.
However, the means through which he or she entered the valley would be swallowed by the cliffs, as well.
"This is the right place," Young said as he entered the valley.
On the third morning after they entered the valley, it began to snow.
They healed me, and entered the valley to see whether I had told them the truth.