Abyssal plains
interior plains
The central plains
interior plains
Abyssal plains
The abyssal plains are flat or very gently sloping areas of the deep ocean floor. They are among the Earth's flattest and smoothest regions and the least explored. Abyssal plains generally lie between the foot of a continental rise (shelf) and a mid-oceanic ridge.
Abyssal plains
I think its great plains but if it isn't don't kill me.
The answer is ................................................ The Interior Plains
interior plains
prairie
your head!