The Great River flows out of it .
Caldron Pool : A churning and frothing pond on the western border of Narnia which forms the receiving pond for the Great Waterfall that falls down from the mountainous Western Wilds .
The Great River flows out of Narnia .
Caldron Pool : A churning and frothing pond on the western border of Narnia which forms the receiving pond for the Great Waterfall that falls down from the mountainous Western Wilds .