Maastricht's Marl Mines

In Maastricht, well near Maastricht, you have the Sint Pietersberg (it is called 'mountain', but it's more of a hill). In that hill there are the famous marl mines (in Dutch: mergelmijnen). Better known as caves, but they are mines. They dug out the marl stones, soft limestone-like material, to build houses and bridges. They did it since the Roman empire. It resulted in a labyrinth of 30 feet high mine tunnels.

Of course I visited these tunnels when I was in Maastricht. High humidity. A constant temperature of 10 degrees centigrade. And totally dark. Except for the few gas lamps the guide provided.
Without the guide you would be totally lost. Quite scary and impressive for a little sheep like me.

All this talk for a simply great picture of me, Youssouf, in a marl mine tunnel with a gas lamp. You can sense the spooky yet warm (or chilly?) atmosphere. Ideal for ghost stories. Unfortunately it was 1 week before Halloween.