A Journey Through Dark Tunnels, Hidden Art, and Wartime Secrets
Let me take you somewhere different. Somewhere dark, mysterious, and full of stories that stretch across centuries. Welcome to Maastricht Underground, where beneath the charming streets of one of the Netherlands’ oldest cities, an entire world waits to be explored. If you’ve ever dreamed of stepping into a place that feels equal parts history lesson and secret adventure, this is it.
The top highlights? Start with a visit to the North Caves (Grotten Noord) beneath Mount Saint Peter (Sint Pietersberg). These underground tunnels once served as quarries for marl, a soft yellowish limestone used in many of Maastricht’s buildings. Over time, the caves transformed from Roman-era limestone quarries into shelters, storerooms, hideouts, and even a strategic command center during World War II. When you walk through these dimly lit passages, you’ll see centuries-old inscriptions, detailed charcoal drawings, and large murals that bring the history of this place to life.
One of the most talked-about features is the underground version of Rembrandt’s The Night Watch, replicated in full size using charcoal. This incredible tribute is just one of many pieces of underground artwork that help turn this dark tunnel system into a magical underground museum. With stories of smuggling, air raid shelters, and even biblical frescoes, there’s something mysterious and fascinating around every corner.
Guided tours are a must, and the local guides are great storytellers. They share both the strategic role of the caves during wartime and the human side of life underground. You’ll hear how locals used the tunnels to escape danger, hold secret meetings, and even create art. It’s an experience you won’t find anywhere else in the Netherlands.
And while Maastricht may be in the south of the country, getting there from our centrally located Bungalowpark ’t Eekhoornnest in Soest is easier than you’d think. A train ride gets you to Maastricht in just over two hours, making it a doable and exciting day trip or overnight getaway.
Hidden Artwork, Quiet Corners, and Great Food Near Maastricht Underground
There’s a lot more to Maastricht Underground than first meets the eye. While most visitors follow the main tour route, there are plenty of surprises tucked away beneath the surface and just outside the cave entrances. If you’re the kind of traveler who loves to find something a little off the usual path, this is the section for you.
Step Off the Main Path and Into Forgotten History
After you’ve seen the recreated version of The Night Watch and heard stories of World War II air raid shelters, ask your guide about the less-visited tunnels. Some smaller routes contain hidden charcoal drawings of fairy tale scenes like Snow White, Jack and the Beanstalk, and even an underground version of Romeo and Juliet. Many of these images were drawn by people taking shelter in the caves during wartime, or by artists with a sense of humor and a lot of time on their hands.
In the Grotten Noord, there’s also a fascinating section where you’ll find Roman-era inscriptions and markings that date back to when these caves were active limestone quarries. One highlight is a small side tunnel known as De Kluis, which some believe once served as a kind of underground chapel or underground church. It’s small, quiet, and peaceful, lit only by guide lanterns and the flicker of your own imagination.
You might even hear about the moon landing mural, a unique scene created decades ago that shows how the caves have continued to evolve as a canvas for memory and creativity.
A Bite to Eat Above Ground
After you emerge from the cool darkness of the caves, you’ll find several charming spots nearby to relax and recharge. Just up the hill from the Fort Sint Pieter entrance, you’ll find Hotel Café Restaurant terraces offering hearty local dishes, cold drinks, and excellent views of the city below. Try a regional beer like Weickse Rosé, or opt for something warm like Dutch mustard soup or a cheese sandwich made with Limburg goat cheese.
For something quick and casual, Maastricht’s historic city center is only a short walk or bike ride away. You’ll find boutique cafés, cozy bakeries, and great places for street food. Whether you’re in the mood for pancakes, Belgian fries, or a slice of fresh fruit tart, you’re covered. Some spots even feature underground cellars that serve as dining rooms, giving you a second chance to enjoy the area’s love of subterranean spaces.
More Than Just a Cave Tour
Before you leave, check if there are guided excursions that combine the North Caves with a visit to Fort Sint Pieter. Some tours also include stops at the ENCI open-cast mine, an impressive modern-day quarry carved into the hills of Mount Saint Peter. These combinations give you a deeper understanding of how chalk and marl shaped this region’s economy, architecture, and identity.
The underground experience in Maastricht is full of unexpected detail, strange stories, and quiet corners that stay with you long after your visit. It’s the kind of place that feels different depending on where you turn, who you’re with, and how much you’re willing to explore. In the next section, I’ll answer the most common questions visitors have about Maastricht Underground so you can plan your visit with confidence.
