プレノワのおすすめウォーキング＆ハイキングルート

Be careful when going down the 10 meters of the small path to see the chasm. Even in dry weather it is slippery and there is nothing to prevent you from falling into the chasm. So be careful.

The Creux Percé is an inverted cone-shaped collapsed chasm approximately 60 m deep and with a circumference ranging from 35 to 25 m at the surface. This chasm is primarily known to speleologists. Exploration of this chasm and its lateral networks began in the 19th century. This site has long been a natural icehouse with a bottom that reaches sub-zero temperatures, even in summer. https://www.bourgogne-tourisme.com/ In May 2025, a special outing, supervised by the Dijon Speleo Club, will allow visitors to descend into this crater.

A former charcoal-fired blast furnace, it stands out for its original design. The construction project was signed by King Louis-Philippe in 1936, and the facility was completed in 1938. The annual production capacity was between 300 and 1,000 tons of cast iron. The furnace was finally shut down in 1872, and after several attempts at conversion, the smelter closed in 1956. Recently, there were several attempts to raise sufficient funds to carry out necessary maintenance work on the dilapidated buildings.

Of the three caves, two are relatively easy to access. One can even be walked through—a beautiful place.

The Celerons viewpoint is accessible via a narrow path that branches off from the hiking trail. Caution! The path runs right along the edge of the cliffs. However, the view over the Combe des Vaux des Roches gorge and its foothills is fantastic and worth the short detour.

Walking up to this point, the view opens up to a sea of greenery and cliffs.

There are three caves there. One of them would have been used by smugglers who stored salt there. Is the name related to this activity?

The Creux Percé abyss is an intriguing chasm in the ground. It is believed to have served as a cooler. In 1910, a temperature reading indicated 22°C on the surface while it was -1°C at the bottom of the abyss.