  Microstate geometries in string theory replace the black-hole horizon with a
smooth geometric "cap" at the horizon scale. In geometries constructed using
superstratum technology, this cap has the somewhat surprising property that
induces very large tidal deformations on infalling observers that are far away
from it. We find that this large-distance amplification of the tidal effects is
also present in horizonless microstate geometries constructed as bubbling
solutions, but can be tamed by suitably arranging the bubbles to reduce the
strength of some of the gravitational multipole moments. However, despite this
taming, these tidal effects still become large at a significant distance from
the microstructure. This result suggests that an observer will not fall
unharmed into the structure replacing the black hole horizon.
