  We study the interaction between monopoles and embedded domain walls in a
O(3) linear sigma model. We discover that there is an attractive force between
the monopole and the wall. We provide evidence that after the monopole and
domain wall collide, the monopole unwinds on the wall, and that the winding
number spreads out on the surface. These results support the suggestion by
Dvali et al. (hep-ph/9710301) that the monopole problem can be solved by
monopole-domain wall interactions.
