Twilight at Honami Hotspring, Shinshu

Shinshu is the old provincial name for Nagano, a region of mountain hot springs (onsen) that became a frequent subject for shin-hanga landscape designers from the 1920s onward. Kasamatsu's view of the Honami spring at twilight shows a cluster of wooden inns along a narrow valley, with steam rising from bath-house roofs and lamps beginning to register in upper-floor windows. The composition uses a high tonal contrast between cool blue shadows in the foreground and warmer interior light, with bokashi worked into both sky and the rising vapor. Hot spring towns gave Kasamatsu a vehicle for combining architecture, mountain landscape, and atmospheric effect within a single image. The choice of twilight rather than full night allowed him to retain landscape readability while introducing the artificial-light accents that define many of his urban evening scenes as well.