This is the 7489th most frequent French word.
plaine
Plain; a large area of flat or gently sloping land.
Here, 'plaine' is used in a geographic sense, referring to a large expanse of flat, open land.
La plaine s'étend à perte de vue.
The plain stretches as far as the eye can see.
'Plaine' again refers to an open, flat geographical area, here indicating a place someone is traveling across.
Ils traversent la plaine rapidement.
They are crossing the plain quickly.
In this context, 'plaine' denotes a specific flat area suitable for camping, emphasizing its natural surroundings.