This unique program, created by ASP Adventure, is unique in Europe.

Your guide will lead you through the 70 kilometres long cave system and will show you the most beautiful places in the cave. The route is not difficult and the speed will be adapted to the wishes of the group.

Each participant receives a special cave-bike (with a light). The tour is suited for both young and old. Your guide will adapt the speed to the wishes of the group.

Especially for individuals (less than 10) who would like to participate in our programs, we offer cave biking at the weekends.

For more information see Cave-biking

Duration: 1 hour
Price per person: 19,- euro
Instruction included

Minimum length 1,40 meter

You can call us saturdays and sundays from 11.00 AM to make your reservation: Please call: +31 (0)43 - 60 11 508.

An exciting, adventurous and fun trip through the of the limestone caves. The route is full of surprises and quests. Having fun and working together are two key elements. You'll have to earn keys, cross waters and conquer a labyrinth to reach the end!

Underneath and around the castleruins of Valkenburg we created a fantastic climbingtrip. Going up and down in the fairytalelike surroundings of the cavesystem with an unique atmosphere. Numerous abstacles have to be overtaken in order to reach the end. The tour is suited for everyone. Everyone is free to chose wether or not he wants to take part in each seperate activity.

Rockclimbing: In the cave you will find 7 meters high climbing wall (40m²). There are routes with different grades, so everyone can enjoy it.

Via ferrata: This Italian expression is used for easy climbs in the Alps, where climbers use ladders and steel cabels to reach the summit. We have created our own via ferrata in our caves which you can explore.

Rappel: One of the highlights in this tour. From the impressing castle ruins you'll descend into the castle's old, 30 meter deep well. You'll reach the old escaperoutes of the knights and continue the tour through the caves. An unique experience!

An experienced guide will lead you through the caves and tell you all about its history: from the beginning 70 million years ago till the present. The most beautiful and interesting places in the caves will be visited in a relaxing and instructive walk in this famous "underground world" of Valkenburg.