For safety reasons, you can access to the underground gallery only with a guide.
46 steps to go on the undergroung gallery ; 12°C during 30 minutes.
How to come
By car : at 45 minutes away from Besançon, Lons-le-Saunier, Dole. At 2 hours away from Lyon and Geneve. Accessible by highways A36 and A39, exit Poligny, Dole or Besançon.
By train : at 2 hours away from Paris by TGV. TGV stations at Dole (45 minutes) or Mouchard (8 minutes).
By plane : airport Dole-Jura at 35 minutes. NEW : since december, a new airline has been opened between London and Dole. All the informations here.