Fig. 4From: Formation of undulating topography and gravel beds at the bases of incised valleys: Last Glacial Maximum examples beneath the lowlands facing Tokyo BayThalweg of the Tama (black line) and Tsurumi (red line) river beds. The knickpoint of the Tama River is at Mizonokuchi. The graph is based on Kanto Regional Development Bureau, Ministry of Land, Infrastructure, Transport and Tourism (2017a, b)Back to article page