This belt is located between the Maizuru Belt and Tamba (Mino- Tamba) Belt (Caridroit et al., 1985). This is also a Middle to Late Permian accretionary complex, similar to the Akiyoshi Belt. However, the tectonic position and some of the components are different. The Ultra-Tamba Belt is composed of Late Carboniferous to Early Permian basalt and conglomerate, sandstone, mudstone, felsic tuff and chert of Middle to Late Permian in age. The Middle Triassic clastic Shimamoto Formation is partly intercalated in this belt.