The 1955 printing used the singular "zone" here. In the second (1967) and subsequent Urantia Foundation printings, the plural has been used. The plural does agree with the verb "are" and seems consistent with the general sense of the paragraph.

Original Paragraph:


^{P125:1, 11:7.7} The relatively quiet zone between the space levels, such as the one separating the seven superuniverses from the first outer space level, are enormous elliptical regions of quiescent space activities. These zones separate the vast galaxies which race around Paradise in orderly procession. You may visualize the first outer space level, where untold universes are now in process of formation, as a vast procession of galaxies swinging around Paradise, bounded above and below by the midspace zones of quiescence and bounded on the inner and outer margins by relatively quiet space zones.