This is a text description of topo_hier.gif. It shows a topology hierarchy with five levels, as explained in text preceding the illustration. The Land Parcels topology geometry layer (level 0) is the lowest level of the hierarchy. Its parent is the Block Group layer (level 1), whose parent is the Tracts layer (level 2), whose parent is the Counties layer (level 3), whose parent is the States layer (level 4). End of description.