Rolling (up and down- not flat) grassland.
hillocks rather than full sized hills.
many cowboy movies have them
with the white ball rolling across the road
Flood plane is geographically correct. This means, an area that does not have an undulating surface that is fairly level, or without elevation. Plane is attributed to flat surface where water percolates, while plain could be used for being straight forward in terms of attitude or openness in mind. Another Answer: For normal use, it is: FLOOD PLAIN. Here is an example sentence: Even if a home is not in a flood plain, it is a good idea for a homeowner to purchase inexpensive flood insurance.
lava
plain
The flood plain
the salbury plain
flat to slighty undulating desert plain.
Undulating is a verb and requires an an adverb, not an adjective, which describes a noun: Slowly undulating, sensuously undulating.
An undulating lowland is a lowland with an uneven or "undulating" surface. There are no outstanding highlands in the area.
The waves are undulating. The waves are rough.
No the word undulating is not a noun. It can be an adjective and a verb.
The sun sparkled on the undulating waves
The fields of wheat were undulating in the breeze.
Undulating is a word used to describe something that has a wavy appearance. A good sentence would be, the girls hair was undulating.
Undulating is land that is grassy and has lots of natural vegetation and plants.
The undulating ground during the earthquake was susceptible to upheaval.
Flat.
UNDULATING