Grotten Zonneberg

View the Sint Pietersberg in a different way from the underground tunnel system underneath this mountain. The Zonneberg quarries are part of this underground tunnel system. Most of the tunnels have been excavated for the ENCI limestone quarry. Over the centuries, several collapses have taken place in this underground network of tunnels, causing a large part of the tunnels to be lost. The Zonneberg quarries were only excavated in the 19th century and these have largely been preserved. In some parts, these corridors link up with the old corridor systems that were already present in the Sint Pietersberg. During the Second World War, these corridors were used as an underground shelter for the people of Maastricht. In these caves, various activities are now organized throughout the year. Zonneberg Caves consists of a structured network of corridors of 80 kilometers. An experienced guide will show you around to show you the most beautiful spots of this corridor system.