D&D 5E Minor Illusion...can it be cast over other objects?

[EvanNave55]

So would you say that you can create an appearance of depth without the physical space for that depth to fit in (ie - can you create a roadrunner-style fake tunnel on a wall?)

While I hear many DMs wouldn't I myself allow illusions to create apparent depth, examples being the above portal, or more commonly something like a pit in the ground the enemies would avoid.

 

[Saeviomagy]

While I hear many DMs wouldn't I myself allow illusions to create apparent depth, examples being the above portal, or more commonly something like a pit in the ground the enemies would avoid.

Personally I'm always keen to give illusion the benefit of the doubt, because to do otherwise makes it an incredibly weak school.