  In this paper, we show that a minimally coupled 3-form endowed with a proper
potential can support a regular black hole interior. By choosing an appropriate
form for the metric function representing the radius of the 2-sphere, we solve
for the 3-form field and its potential. Using the obtained solution, we
construct an interior black hole spacetime which is everywhere regular. The
singularity is replaced with a Nariai-type spacetime, whose topology is
$\text{dS}_2 \times \text{S}^2$, in which the radius of the 2-sphere is
constant. So long as the interior continues to expand indefinitely, the
geometry becomes essentially compactified. The 2-dimensional de Sitter geometry
appears despite the negative potential of the 3-form field. Such a dynamical
compactification could shed some light on the origin of de Sitter geometry of
our Universe, exacerbated by the Swampland conjecture. In addition, we show
that the spacetime is geodesically complete. The geometry is singularity-free
due to the violation of the null energy condition.
