At torii-toge pass (nagano prefecture ) situated between narai-juku and yabuhara-juku , dividing the japan sea (the shinano river system ) from the pacific ocean (the kiso river system ) and magome-toge pass located between tsumago-juku and magome-juku , maintenance work is currently underway to turn the pathes into nature trails . また、奈良井宿と藪原宿の間にあり、日本海(信濃川水系)と太平洋(木曽川水系)の中央分水嶺でもある鳥居峠 (長野県)や、妻籠宿と馬籠宿の間にある馬籠峠では、自然遊歩道としての整備が進められている。