The Plain of Sharon is mentioned in the Bible (1 Chron. 5:16, 27:29; Isaiah 33:9, 35:2, 65:10), including the famous reference to the enigmatic "Rose of Sharon" (Song of Solomon 2:1). In ancient times, the plain was particularly fertile and populous. Zionist immigrants arrived in the early 20th century, and populated the region with many settlements. In 2008, it was the most densely populated region of Israel.