Norwich ― In 1643, on a cliff overlooking a rocky gorge, Chief Sachem Uncas of the Mohegan Tribe was said to have jumped all the way across to the other side during a battle with the Narragansett …Norwich ― In 1643, on a cliff overlooking a rocky gorge, Chief Sachem Uncas of the Mohegan Tribe was said to have jumped all the way across to the other side during a battle with the Narragansett …