Yes, it is imperfect like all man-made things! One lintel has an extra hole in it; one stone had a cracked bottom but was packed and used anyway (this flaw led to an early collapse.)
There is no written evidence or any other absolute proof concerning who built Stonehenge or why they built it, so it may well have been Aliens.
Stonehenge is man-made.
Man made.
Rocks were used to build the monument, which is a natural object, though man put it together to form Stonehenge. In quick answer, no. It is man-made.
No, Stonehenge was created by an ancient race of people.
Stonestone
rocks
See related link for information about Stonehenge.
Stonehenge is a monument that is made out of large stones. There is a circle of stones in Stonehenge, with several stones laying on top of the vertical stones.
Stonehenge
I dont know what its made out of but its made near StoneHenge
I dont know what its made out of but its made near StoneHenge
The observations made at Stonehenge were of a simple kind carried out for the religious and ritual practices of the people.
Stonehenge.
Sarsen and bluestonelimestone