The battery was built to protect the entrance to Osaka Bay during the Russo-Japanese War period.
The masonry incorporates specialized heat-resistant bricks designed to withstand the vibrations of artillery fire.
The site is part of the broader Yura Fortress complex, which spanned multiple islands and coastal points in the Kii Channel.
Many of the interior structures, including the magazine rooms, feature vaulted ceilings engineered to vent explosive gases.
The location was strategically chosen for its high-altitude vantage point offering panoramic views of Tomogashima Island.
The Miyama 1st Gun Battery Site is a preserved Meiji-era coastal fortification located on the western tip of Kada, Wakayama. Constructed in the late 19th century as part of the Yura Fortress defense network, it was designed to protect the Kii Channel from naval incursions. The site features original red-brick gun emplacements, underground ammunition storage rooms, and observation bunkers integrated into the coastal topography. The brickwork displays a distinct 'French bond' masonry style common in military architecture of the era. Much of the site has been reclaimed by forest growth, creating a juxtaposition between heavy industrial military ruins and the surrounding nature. Visitors can traverse the interconnected tunnels and courtyards that once housed artillery crews. It remains one of the most accessible examples of Japan's early modern defensive military heritage.
The entrance to the brick ammunition magazine tunnel, which provides a dramatic frame of sunlight entering the dark interior.
Wear sturdy, closed-toe walking shoes as the terrain is uneven and can be slippery.
Bring a flashlight or headlamp to safely explore the unlit interior bunkers and ammunition rooms.
Check local weather conditions as the coastal path can be overgrown or muddy after rainfall.
Attempting to explore off-trail areas near the cliff edges where ground stability is compromised.
Do not climb on unstable brick structures or remove any artifacts, as the site is protected cultural heritage.
