Important but missing context:<p>---snip---<p>Null Island is a fictional island in the Gulf of Guinea added to the Natural Earth public domain map dataset,[1] located where the equator crosses the prime meridian, at coordinates 0°N 0°E.[2][3] Natural Earth describes the entity as a &quot;1 meter square island&quot; with &quot;scale rank 100, indicating it should never be shown in mapping.&quot;[1] Although intended humorously, the fiction has a serious purpose and is used by mapping systems to trap errors.<p>---snip---<p>(Wikipedia.)