Redrock Brook, Franconia Brook Trail - At the Redrock Brook crossing (above), along today’s Franconia Brook Trail in the Pemigewasset Wilderness, remnants of a bridge from the East Branch & Lincoln Railroad (1893-1948) remained for many years. Active during the early 1900s, this branch of the railroad began at trestle No. 7 and ended at logging Camp 13. A few old books reveal that the origin of the name “Redrock” derives from the red feldspar rock that is in the ...