Fragmentation of a spot by subsurface convective flows. The time sequence above show the surface brightness of the right spot (upper panels) and vertical cross section of the associated magnetic structure at and beneath the photosphere (lower panels). Vertical cross sections are taken at the location of the dashed lines shown in the upper panels. Illustrated in terms of the local Alfvén speed, the lower panels show how relatively field-free convective upflows intrude into the spot and eventually carves the spot into fragments. The arrival of such upflows at the photosphere is marked by the initial appearance of a light bridge. As the upflow persists, the light bridge transitions into a granulation pattern more typical of the quiet Sun and plage regions.