Undulating is land that is grassy and has lots of natural vegetation and plants.
Undulating is a verb and requires an an adverb, not an adjective, which describes a noun: Slowly undulating, sensuously undulating.
hilly, flat, green, parched, undulating, barren, fertile, desolate,
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.
The undulating ground during the earthquake was susceptible to upheaval.
Flat.
A fresh terminal moraine will be hummocky and with hollows, and can be difficult and dangerous to traverse. Ancient moraine is a pleasant meadow land with an undulating topography.
It is located to the south of Islamabad between River Indus and River Jhelum. It is an open, undulating land with extensive flat areas.