A wellbore visualization system can receive electromagnetic field data related to a formation from a downhole tool in a wellbore. The visualization system generates a first inversion slice that represents an inversion of the electromagnetic field data about the formation at a first true vertical depth. The visualization system generates a second inversion slice that represents an inversion of the electromagnetic field data about the formation at a second true vertical depth. The visualization system generates an inversion stack comprising the first inversion slice and the second inversion slice. The visualization system presents a user interface comprising the inversion stack for use to determine a distance from the formation to the downhole tool in the wellbore.