Satsu-chika is a free smartphone App providing information on the underground system and surroundings in central Sapporo. Dining function to receive information on restaurants around the Sapporo Ekimae-dori Underground Walkway (Chi-Ka-Ho) Event function to check events in the Sapporo Ekimae-dori Underground Walkway (Chi-Ka-Ho) Subway Timetable function to check the subway timetable of the Sapporo City Transportation Bureau, and the most convenient boarding time based on your underground posit