Have lunch before entering Iwami Ginzan
As you reach Oda on National Route 9, stop at Road Ginzan for toilets and lunch. Choose a conger eel rice bowl or Sanbe soba at the restaurant, then pick up drinks or a small sweet at the shop before heading to Iwami Ginzan World Heritage Center. This reduces the need to search for a meal while exploring.
National Route 9 → Road Ginzan → Iwami Ginzan World Heritage Center → Omori townscape
At lunchtime, keep a backup to the restaurant: takeaway from the shop or a place to eat in the Ginzan area.