where does the penobscot river start and end
Penobscot River It arises from four branches in several lakes in north-central Maine, which flow generally east. After the uniting of the West Branch with the East Branch at Medway (45°36′14″N 68°31′52″W﻿ / ﻿45.604°N 68.531°W﻿ / 45.604; -68.531﻿ (Penobscot River source)), the Penobscot flows 109 miles (175 km) south, past the city of Bangor, where it becomes navigable. Also at Bangor is the tributary Kenduskeag Stream. It empties into the Atlantic Ocean in Penobscot Bay. It is home to the Penobscot people that live on Indian Island.
Nile Below the Aswan High Dam, at the northern limit of Lake Nasser, the Nile resumes its historic course.
Alonso Álvarez de Pineda
Limit of a function (the Dirichlet function) has no limit at any x-coordinate.