Question: Where does the section of railroad that is still used by Conway Scenic Railroad connect to the Maine Central Railroad?

Context paragraphs:
Conway Scenic Railroad: The Conway Scenic Railroad (reporting mark CSRX) is a heritage railway in North Conway, New Hampshire, United States.  The railroad operates over two historic railway routes: a line from North Conway to Conway that was formerly part of the Conway Branch of the Boston and Maine Railroad, and a line from North Conway through Crawford Notch to Fabyan that was once part of the Mountain Division of the Maine Central Railroad.  The Conway line is owned by Conway Scenic, and the Mountain Division is owned by the State of New Hampshire.  Russ Seybold is owner and president of the Conway Scenic.

Portsmouth, Great Falls and Conway Railroad: The Portsmouth, Great Falls and Conway Railroad (PGF&C) (later known as the Conway Branch of the Boston and Maine Railroad) is a former rail line between Rollinsford and Intervale, New Hampshire, in the United States.  At Rollinsford, the line connected to other lines to provide service between the White Mountains and coastal cities such as Boston.  At Intervale, it connected to the Mountain Division of the Maine Central Railroad.  The rail line takes its name from the city of Portsmouth, near its southern terminus; the city of Somersworth (formerly known as "Great Falls"); and the town of Conway, near its northern terminus.  Today, the infrastructure of the former PGF&C is owned by different entities, including the State of New Hampshire, the Conway Scenic Railroad, and the New Hampshire Northcoast Corporation.  Some segments are still operated as freight or heritage railways, while other segments are being maintained as rail trails.

Rockland Branch: The Rockland Branch is a railroad from Brunswick, Maine to Rockland, Maine.  A charter was granted in 1849 to build a railway from the Portland and Kennebec Railroad on the west side of the Kennebec River to Rockland.  Construction through the rocky headlands of the Atlantic coast proved more expensive than anticipated.  The Knox and Lincoln Railroad commenced service to Rockland in 1871 using a ferry to cross the Kennebec River between Bath and Woolwich.  The Knox and Lincoln was leased by Maine Central Railroad in 1891, and became Maine Central's Rockland Branch in 1901.  Maine Central purchased the Samoset destination hotel in nearby Glen Cove (a part of neighbouring Rockport) in 1912, and offered direct passenger service for summer visitors from the large eastern cities.  Carlton bridge was completed in 1927 to carry the railroad and U.S. Route 1 over the Kennebec River.  Maine Central sold the Samoset hotel in 1941, and the last Maine Central passenger train to Rockland was on 4 April 1959.  The State of Maine purchased the branch in 1987 to prevent abandonment.  The line has subsequently been operated by the Maine Coast Railroad, the Maine Eastern Railroad, and, beginning in 2016, the Central Maine and Quebec Railway.

Downeast Scenic Railroad: The Downeast Scenic Railroad (reporting mark DSRX) is a heritage railway in Ellsworth, Maine which is owned and operated by the Downeast Rail Heritage Trust, which is a 501(c)3 charitable organization founded in the fall of 2005.  The railroad operates over the historic Calais Branch which was once part of the Maine Central Railroad.  Operations are out of Washington Junction and runs west towards Brewer.  The railroad inaugural run was Saturday, July 24, 2010, with invited guests on board.  The first 4 mi to Ellsworth Falls have been completed, but work continues on the line west of Ellsworth Falls from Ellsworth to Green Lake where the railroad plans to run excursion trains in the near future.

Crawford Depot (Carroll, New Hampshire): Crawford Depot, also known as Maine Central Passenger Railway Station, is a historic passenger railroad station at the top of Crawford Notch in the Bretton Woods area of the town of Carroll, New Hampshire.  Built in 1891, it is a surviving emblem of the importance of the railroad in the area's history as a tourist destination, and is one of the finest examples of Queen Anne railroad architecture in northern New England.  Now home to a visitors center operated by the Appalachian Mountain Club, it was listed on the National Register of Historic Places in 1982.  It is also the northern terminus of most trains on the "Notch Train" service of the Conway Scenic Railroad.

Maine Central Railroad main line: The Maine Central Railroad Company main line extended from Portland, Maine, east to the Canada–US border with New Brunswick at the Saint Croix-Vanceboro Railway Bridge.  It is the transportation artery linking Maine cities to the national railway network.  Sections of the main line had been built by predecessor railroads consolidated as the Maine Central in 1862 and extended to the Canada–US border in 1882.  Through the early 20th century, the main line was double track from South Portland to Royal Junction, where it split into a lower road through Brunswick and Augusta and a back road through Lewiston which converged at Waterville into single track to Bangor and points east.  Westbound trains typically used the lower road with lighter grades, while eastbound trains of empty cars used the back road.  This historical description does not include changes following purchase of the Maine Central Railroad by Guilford Transportation Industries in 1981 and subsequent operation as part of Pan Am Railways.

North Conway Depot and Railroad Yard: The North Conway Depot and Railroad Yard is a rail depot and yard located in North Conway, New Hampshire.  Built in 1874, the depot was designed by Nathaniel J. Bradlee in an eclectic Russian Victorian style.  The station is also the terminus for the Conway Scenic Railroad.  Northwest of the station stands a roundhouse, which now houses the Scenic Railroad's rolling stock; it was built around the same time as the station.

Durbin and Greenbrier Valley Railroad: The Durbin and Greenbrier Valley Railroad (reporting mark DGVR) is a heritage and freight railroad in the U.S. states of Virginia and West Virginia.  It operates the West Virginia State Rail Authority-owned Durbin Railroad and West Virginia Central Railroad (reporting mark WVC) , as well as the Shenandoah Valley Railroad in Virginia.  Beginning in 2015, DGVR began operating the historic geared steam-powered Cass Scenic Railroad, which was previously operated by the West Virginia Division of Natural Resources as part of Cass Scenic Railroad State Park.

Portland and Ogdensburg Railway: The Portland & Ogdensburg Railroad was a railroad planned to connect Portland, Maine to Ogdensburg, New York.  The plan failed, and in 1880 the Vermont section was reorganized and leased by the Boston & Lowell Railroad.  In 1886, the Maine and New Hampshire section was reorganized as the Portland & Ogdensburg Railway.  That part was leased to the Maine Central Railroad in 1888, and in 1912 the Maine Central leased the eastern part of the Vermont section from the Boston & Maine Railroad, the successor to the B&L.

Mountain Division: The Mountain Division (later the Mountain Subdivision) is a railroad line that was once owned and operated by the Maine Central Railroad (MEC).  It stretches from Portland, Maine on the Atlantic Ocean, through the Western Maine Mountains and White Mountains of New Hampshire, ending at St. Johnsbury, Vermont in the Northeast Kingdom.  The line was abandoned in 1983 by MEC's successor, Guilford Transportation Industries (GTI).  Guilford retained a stub between Portland and Westbrook.  A section in New Hampshire remains in use by heritage railway Conway Scenic Railroad.

Supporting paragraphs: Portsmouth, Great Falls and Conway Railroad Mountain Division
Answer: At Intervale