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Mt. Kasayama

Guide

Mt. Kasayama

9 min read

Overview & Attractions

Mt. Kasayama is a small volcano standing at 112m, located on the northeastern coast of Hagi City, Yamaguchi Prefecture. Its name is derived from its shape, which resembles a 'Ichime-gasa' (a traditional Japanese woman's hat). Situated in the center of the Kitachimon Coast Quasi-National Park, it is a scoria cone featuring a crater approximately 30m in diameter and 30m in depth. This site is a collection of natural sculptural beauties, including Myojin Pond, created by volcanic topography, and the camellia forest that changes its expression with every season.

History & Cultural Background

The formation of Mt. Kasayama consists of a lava plateau from an eruption approximately 11,400 years ago, followed by the formation of a scoria cone. Historically, the site gained academic and touristic attention when the Crown Prince (the future Emperor Showa) visited in 1926. Furthermore, in 1927, the mining and metallurgy scholar Toyonoshin Tono, who owned the land at the time, developed the mountain trails. His son, Shoichi Tono, later donated the area to Hagi City. A monument commemorating the Tono father and son is located near the summit to preserve this history.

Mt. Kasayama 1

Main Highlights

Mt. Kasayama is dotted with precious spots created by unique volcanic phenomena and natural forces.

  • *Kasayama Camellia Forest**: At the northern tip of Mt. Kasayama in Tora-gasaki, approximately 25,000 wild camellia plants grow across a 10-hectare area. Flowering begins around December, reaching its peak from mid-February to late March.
  • *Myojin Pond**: A coastal lake formed by the interaction of lava and tides. Because seawater enters through gaps in the rocks, the water level rises and falls with the tides. The pond is home to about 20 species of saltwater fish, including sea bream.
  • *Kazaana (Natural Air Conditioner)**: This is a space created within the lava where cool air flows out, acting as a natural air conditioner even in the heat of summer.
  • *Tono-no-su Observatory**: Near the 112m summit, this observatory offers breathtaking views of the Hagi cityscape and the islands scattered across 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 Mt. Kasayama is during the 'Hagi Camellia Festival' from mid-February to late March. During this period, you can witness the stunning sight of vibrant camellias in full bloom and the 'Ochitsubaki' phenomenon, where fallen blossoms carpet the ground in red. The views from the summit are most spectacular on clear, sunny days when the islands of the Sea of Japan are clearly visible.

Mt. Kasayama 2

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 observatory, you can relax at the cafe while enjoying the scenery. This area serves as an excellent educational site for understanding Geoparks.

Surrounding Area

The area around Mt. Kasayama is rich in nature and culture. Near Myojin Pond and other historical sites in Hagi, you can encounter local ingredients and traditional crafts. The scenic coastline is also perfect for driving and strolling.

Mt. Kasayama 3

What to Bring, Clothing & Etiquette

As this is a natural environment, please note the following:

  • *Clothing**: For trekking, comfortable walking shoes (sneakers or hiking shoes) and active clothing are highly recommended.
  • *Payment**: For the summit cafe, we recommend checking in advance if they accept credit cards or transit IC cards, as cash is often preferred.
  • *English Support**: While there are some signs, detailed English-language support is limited on-site.
  • *Reservations**: No prior reservation is required to use the hiking trails or nature paths.
  • *Photography**: Photography of the natural landscape is free, but please respect the local flora and follow mountain etiquette.
  • *Accessibility**: Due to the natural terrain (rocks and uneven paths), the area is not suitable for wheelchairs.
  • *Manners**: To protect the environment, please do not pick plants or leave any trash behind.