Trying my best to make Pterano a real estate agent. 
This...my friends, is a lovely 10,000 acre, fully furnished, ready to move in Valley. I guaranteed you that this is the perfect place for you and your friends. These mountains provide ample shelter from predators and plenty of cover from the elements. Thousands of plant species occupy this area, so even the most pickiest of eaters can engorge themselves with satisfaction. To top it off, we have a beautiful waterfall that descends into the river and provides all the fresh water you need.
The price for this wonderful Valley, you say? I offer an exchange. I take over the Great Valley, and this will all be yours!
Deal?