  We study the null orbifold singularity in 2+1 d flat space higher spin theory
as well as string theory. Using the Chern-Simons formulation of 2+1 d Einstein
gravity, we first observe that despite the singular nature of this geometry,
the eigenvalues of its Chern-Simons holonomy are trivial. Next, we construct a
resolution of the singularity in higher spin theory: a Kundt spacetime with
vanishing scalar curvature invariants. We also point out that the UV
divergences previously observed in the 2-to-2 tachyon tree level string
amplitude on the null orbifold do not arise in the $\alpha^\prime\to \infty$
limit. We find all the divergences of the amplitude and demonstrate that the
ones remaining in the tensionless limit are physical IR-type divergences. We
conclude with a discussion on the meaning and limitations of higher spin
(cosmological) singularity resolution and its potential connection to string
theory.
