After passing playing fields to the south, the A1 briefly becomes Market Place, a former street market that has evolved into a short stretch of shops, then becomes Falloden Way – built between 1914 and 1924 as part of a programme of planned extensions to Hampstead Garden Suburb, and runs on an embankment due to a dip in the ground caused by Mutton Brook, a tributary of the River Brent, which runs parallel to the road immediately to the south for its entire length. The north side of the road is occupied by 1930s housing blocks, whilst the southern side is occupied by a narrow strip of parkland following the brook, and by the northern tip of Big Wood and Little Wood – two of the few surviving remnants of the ancient woodland that once covered what is now north London.