Online reservations were introduced Monday for visitors climbing Mt. Fuji on the most commonly used trail situated in Yamanashi Prefecture to ease congestion, with local authorities set to start charging 2,000 yen ($13) when the trail opens this summer. Bookings can be made on the official website for climbing Mt. Fuji, which is operated by the prefecture and other stakeholders, until the day before the climb. The Yoshida Trail on the Yamanashi Prefecture side of the 3,776-meter mountain is usually open from July 1 to Sept. 10. The prefecture accepts a maximum of 4,000 climbers per day and 3,0…