  We study a particular class of D-brane bound states in type IIB string theory
(dubbed "superstrata") that describe microstates of the 5D Strominger-Vafa
black hole. By using the microscopic description in terms of open strings we
probe these configurations with generic light closed string states and from
there we obtain a linearized solution of six-dimensional supergravity
preserving four supersymmetries. We then discuss two generalizations of the
solution obtained which capture different types of non-linear corrections. By
using this construction, we can provide the first explicit example of a
superstratum solution which includes the effects of the KK-monopole dipole
charge to first order.
