Kingsport was developed after the Revolutionary War, at the confluence of the North and South Forks of the Holston River. In 1787 it was known as "Salt Lick", for an ancient mineral lick. It was first settled along the banks of the South Fork, about a mile from the confluence. The Long Island of the Holston River is near the confluence, which is mostly within the present-day corporate boundaries of Kingsport. The island was an important site for the Cherokee, colonial pioneers and early settlers, and specifically mentioned in the 1770 Treaty of Lochaber.