Mt. Kasayama

Overview & Charm

Mt. Kasayama is a small volcano with an elevation of 112m, located on the northeastern coast of Hagi City, Yamaguchi Prefecture. Its name comes from its shape, which resembles a '笠' (kasa), a traditional Japanese hat worn by women. Situated in the center of the Kitachimonato Kaigan Quasi-National Park, it is a scoria cone featuring a small crater 30m in diameter and 30m deep. It is a place where geological beauty meets natural wonder, featuring the Myojin Pond and a forest that changes its expression with every season.

History & Cultural Background

The landscape was formed by a lava plateau from a eruption approximately 11,400 years ago, followed by subsequent eruptions that created the scoria cone. Historically, the mountain gained academic and tourist attention after the Crown Prince (later Emperor Showa) visited in 1926. The hiking paths were later developed in 1927 by mining scholar Toyonoshin Tono, and the area was eventually donated to Hagi City by his son, Shoichi Tono. A monument dedicated to the Tono father and son stands near the summit to commemorate this history.

Main Highlights

Mt. Kasayama is dotted with rare natural phenomena and geological sites:

• *Camellia Forest**: At the northern tip, Nigasaki, approximately 25,000 wild camellia trees grow across 10 hectares. Flowering begins around December, reaching its peak from mid-February to late March.
• *Myojin Pond**: A saltwater lake formed by lava and tides. Seawater flows in through gaps in the rocks, causing the water level to rise and fall with the tides. It is home to about 20 species of saltwater fish, including sea bream.
• *Wind Holes (Kazaana)**: These are natural 'air conditioners' created by spaces within the lava. Even in summer, you can observe cool air flowing out from these vents.
• *Summit Observatory 'Tobinosu'**: At the 112m summit, the observatory offers panoramic views of Hagi city and the islands in the Sea of Japan. The facility includes a cafe on the 2nd floor and a rest area/exhibition room on the 3rd floor.

Seasonal Recommendations

The best time to visit is during the 'Hagi Camellia Festival' from mid-February to late March. During this period, the vibrant red camellia flowers create a stunning landscape, including the beautiful 'ochitsubaki' (fallen flowers) covering the ground. The view from the summit is most spectacular on clear, sunny days when the islands of the Sea of Japan are clearly visible.

Activities & Experience

You can enjoy trekking along the 'Mt. Kasayama Nature Research Path.' The route from Myojin Pond through the camellia forest to the summit allows you to observe geological changes and plant diversity. At the summit, you can relax at the cafe while enjoying the view. It is an excellent spot for learning about the wonders of a Geopark.

Nearby Area

The area surrounding Mt. Kasayama is rich in culture and nature. Near Myojin Pond and the historic areas of Hagi, you can encounter local ingredients and traditional crafts. The scenic coastline is also perfect for driving and coastal walks.

What to Bring, Clothing & Etiquette

• *Clothing**: Wear comfortable walking shoes (sneakers or hiking shoes) and clothing suitable for light trekking.
• *Payment**: For the summit cafe, it is recommended to check if they accept credit cards or IC cards in advance; cash is widely used.
• *Language**: While it is a tourist spot, detailed English support may be limited.
• *Reservations**: No prior reservation is required for the hiking paths.
• *Photography**: Photography of the landscape is free, but please respect the plants and local environment.
• *Accessibility**: Due to the natural terrain (rocks and uneven paths), the area is not suitable for wheelchairs.
• *Manners**: Please do not pick plants or leave any trash behind to protect the natural environment.