Christmas in the caves of Valkenburg

Discover a magical cave brimming with Limburg’s history, impressive marl sculptures and sand sculptures, 3D Christmas art, sand art by the ‘sand wizard’ and Europe’s longest Christmas diorama.

Marl caves Limburg | MergelRijk Valkenburg

Visit this stunning cave at Christmas. You expect a cave, but you’ll experience so much more.

Experience a unique adventure in the caves of Valkenburg at MergelRijk over the Christmas period at South Limburg’s most enjoyable underground attraction. Here, you’ll immerse yourself in the fascinating Christmas world of marl and discover how this special type of limestone has been used for centuries in construction, art and even as hiding places.

Step inside the mysterious cave and let Jan, our audio guide, take you on a tour at your own pace. Along the way, learn all about how the caves were formed, marl quarrying, how people have worked with marl throughout the ages, and what the caves were used for. There’s plenty to experience at MergelRijk – all in an underground Christmas atmosphere! There are also all sorts of Christmas activities to enjoy along the way. Everything is included in the admission price! That includes trying your hand at working with marl in Santa’s Workshop. 

the best day out
Top ANWB
Dagjeweg No. 5, the Netherlands
Dagjeweg Gold
Marble Kingdom December 2025 21 large
Cave walk + audio tour
Marble Kingdom December 2025 12 large
Working marl
Marl caves Limburg | MergelRijk Valkenburg
Activities
snowman width 2400px and height
3D cave paintings
Best cave outing in Limburg
MergelRijk was voted the best outing in Limburg by ANWB and offers entertainment for all ages