Warning! The owner of the land around this place became hostile! 

There were reports of punctured tires on the parking lot. 

I do not recommend going this way before it gets settled. 

Alternative might be to access it from the west discretely. 

A hike to the famous Tour Isabelle natural double arch (also named the Tour Percée or Pierced Tower). Its span is 32 metres (105 ft), which makes it the biggest natural arch in the Alps.

It remained unknown for probably everybody, until its discovery in May 2005.