  All known horizonless black-hole microstate geometries correspond to brane
sources that acquire a finite size, and hence break the spherical symmetry of
the black hole. We construct, for the first time, solutions with zero horizon
area that have the same charges as a three-charge F1-NS5-P Type-IIA black hole
and preserve this spherical symmetry. The momentum of these solutions is
carried by longitudinal D0-D4 density fluctuations inside the NS5-branes. We
argue that these solutions should be interpreted as the long-throat limit of a
family of smooth, horizonless microstate geometries, called superstrata, where
such geometries degenerate. The existence of these geometries indicates that a
finite-size horizon does not appear even in the singular corners of the moduli
space of three-charge microstate geometries.
