Interior Concept Design - The Small Chapel

This small church has recently become the center of a bizarre phenomenon. Last Sunday, during mass, the floor exploded, and a glowing gooey substance started seeping from the walls and ceiling. Eyewitnesses reported seeing ghostly figures emerging from underground. Eleanor Blackwood, a brave historian and hobby paranormal investigator, goes to investigate.

Church exterior: https://www.artstation.com/artwork/98egXR