I went to the Ukishima Marsh in Lake Kasumigaura, Ibaraki Prefecture. Exploration ▼I parked my car in the parking lot, went to the toilet, and then set off. ▼As I left the parking lot and headed to the right, I found the observation area. There was a sign, so I knew it was the entrance. ▼I immediately started exploring the marsh. ▼As I went down the stairs in the observation area, I immediately found a marsh, or rather, a shallow area. At first glance, it looked...