What is the phobia name for fear of basements?

Answer 1

Closest I can find is:

Nyctophobia = fear of the dark

or

Achluophobia = fear of darkness

Answer 2

Although there is no term for the fear of basements, in most cases it is a symptom of either Claustrophobia or Agoraphobia.

Answer 3

Hi, as a tunnel is a closed in space, and is dark and confined, you could say that Claustrophobia covers this fear. I hope this helped :)

Answer 4

photophobia