You can also walk on the promenade along the seaside from the parking lot and look up at the steep natural cliff under the Second Enclosure. Surprisingly, this cliff was created by the great pyroclastic flow from Mt. Aso over Ariake Sea about 90,000 years ago.
Later History
After the Shimabara Rebellion, the shogunate settled Buddhist farmers in the Shimabara Peninsula. That’s why there have been very few Christians in the area until now. The ruins of Hara Castle were designated as a National Historic Site in 1938. However, the details of the castle have recently been revealed since the excavation started in 1990. As a result, they have been on the World Heritage List as Hidden Christian Sites in the Nagasaki Region since 2018.
My Impression
After the Shimabara Rebellion, it is said that the governance of the lords under the shogunate became relatively gentle and they sometimes overlook underground Christians who were harmless. I think the precious sacrifice of the uprising people in the Shimabara Rebellion was not for nothing. Many details about the rebellion and Hara Castle are still unknown, so I hope that the facts of them will become clearer little by little in the future.
How to get There
If you want to visit the ruins by car, it is about 75 minutes away from Nagasaki IC on the Nagasaki Expressway. You can park in the parking lots for visitors beside a spa facility called Harajo Onsen Masago. If you want to use public transportation, you can take the Shimatetsu Bus from Shimabara Station on the Shimabara Railway and get off at the Harajo-mae bus stop. If you go there from Tokyo or Osaka, I recommend going to Nagasaki Airport by plane. After that, you can take the shuttle bus to Isahaya Station and transfer to the Shimabara Railway at the station.