The phrase "alien terrain" is correct and usable in written English.
It can be used to describe an unfamiliar or strange environment, often in a metaphorical sense.
Example: "After moving to the new city, I felt like I was navigating through alien terrain, unsure of where to go or what to expect."
Alternatives: "foreign landscape" or "unfamiliar ground".
He began nervously, like a hunted man in alien terrain.
after surveying the alien terrain where the World Trade Center once stood.
Taken by the artist Melanie Smith, they suggest surveillance photographs of alien terrain.
That's a nod to science fiction, where the archetypal marker of strangeness is two moons (or suns) rising in tandem over alien terrain.
But, if she at first felt uncertain as she embarked on such alien terrain, the newly named Hillary Clinton seems to have quickly recovered her characteristic self-confidence.
Data coming soon should be able determine the size and shape of the mounds, Moore said, and what might have caused the alien terrain.
Here are buildings whose forms must have once seemed as alien in this terrain as flying saucers.
Speaking to the BBC straight after his solo plunge, he said that the floor of the trench was an alien and barren terrain.
Meanwhile, a certain group of people in "Central Africa" (this film sticks to the Hollywood habit of thinking of Africa as an undifferentiated continent without nation states) who had long fought a "ground war" against the aliens and whose terrain is the site of one of its biggest crashed spaceships, is itself plagued with occult warnings – they are led by warlord Dikembe (Deobia Oparei).
And her cinematographer, Agnès Godard, composes some really beautiful shots of the African landscape, with the alien light and unforgiving terrain against which these male bodies, and souls, are tested to destruction.
Curving thighs and wriggling fingers became sensual terrains both alien and familiar; it was play in the best sense, equal parts exploration and contemplation.
