text: At this position is a structure (tunnel??) 
  There was a discussion in the media about reactivation of a agricultural tunnel for a bike way.
  
  https://geoportail.wallonie.be/walonmap#BBOX=271668.1593459783,271881.0170633604,156290.7939539817,156401.39000850715#SHARE=944DDBDF7110700BE053D0AFA49D0BDE