  A crystal structure with a point defect typically returns to its ideal local
structure upon moving a few bond lengths away from the defect; topological
defects such as dislocations or disclinations also heal rapidly in this regard.
Here we describe a simple point defect -- a two-fold atom incorporated at the
growth edge of a 2D hexagonal honeycomb material -- whose healing may require a
defect complex with 50 or more atoms. $\textit{Topologically}$ the two-fold
atom disappears into a single 'long bond' between its neighbors, thereby
inducing a pentagonal disclination. However, $\textit{chemically}$ this
disclination occupies as much physical space as a six-fold ring. This
incompatibility of chemistry and topology can cause a ''ringing'' of the
Gaussian curvature that creates an expansive healing region and may even spawn
a semi-infinite grain boundary propagating outwards from the topological scar.
