01 / Bank of the Yoshioka River
In a letter to his son, Ino Tadatakacalled his landing "a riverbank called Yoshioka."
On July 10, 1800, the boat carrying the six-member survey party, bound for Hakodate, was carried by the wind to near the Yoshioka River. The town says the diary entry "a little over one ri of land, Fukushima" can be called the first survey record in Hokkaido. A mountain in the town recorded in the bearings of mountains and islands was sighted from nine places in Aomori Prefecture.
- Reached the Yoshioka River on July 10, 1800
- Diary entry "a little over one ri of land, Fukushima" is the first survey record (town)
- The town's mountain was sighted from 9 places in Aomori
