At cave biking you can take a special 8 to 10 kilometre cycle tour through the Sibbergroeve, Europe's largest underground network of passages. This has been an unforgettable experience in Valkenburg for years, and now it's your turn to discover this unique marl system.

Accompanied by an experienced guide, you will cycle deeper and deeper into the soft yellow marl system during this active discovery tour. On your special cave biking (a chainless mountain bike specially designed for underground adventures) you can explore the labyrinth of tunnels.
No need to worry about speed: the pace will be adjusted to suit the slowest cyclist in the group, so that everyone can enjoy this adventure.

Keep your wits about you and duck occasionally, otherwise a collision is guaranteed – luckily your helmet will protect you!

What can you expect?

• unique experience in South Limburg
• guidance from an experienced guide
• incl. special cave bike and helmet
• We can arrange transport to and from the caves in various ways: by coach, bicycle, Vespa or perhaps by car rally?
• if there are guests who prefer overhead cycling we will arrange this too
• Available in Dutch and English

Please note:
You need to be well-footed to reach the caves. Access is via a long spiral staircase. Bear in mind a constant temperature of 12 degrees in the caves.