  This article constructs coassociative submanifolds in $G_2$-manifolds arising
from Joyce's generalised Kummer construction. The novelty compared to previous
constructions is that these submanifolds all lie within the critical region of
the $G_2$-manifold in which the metric degenerates. This forces the volume of
the coassociatives to shrink to zero when the orbifold-limit is approached.
