What an excellent tour in the quaint city of Maastricht. This hour long tour takes you through old…read moremines that span hundreds of kilometers long. Our guide was so knowledgeable & funny with our group.
I highly recommend to do this if you find yourself in this lovely city. It is cheap too, maybe 6 euros. There's also a cute restaurant next to the caves, we didn't go there, but if we planned better, we would have. It is a nice view of the city.