This rocky mountain tunnel is a great addition to your Hape Railway sets! With infrared activated lights and sounds!   Expansion: Expand your railway track by adding this mountain tunnel train set. Accessory: The mountain tunnel is the perfect wooden train track accessory for expanding your train set Sounds: Mountain makes train sounds when train passes through or the button is pressed Feature: Top of mountain is removable so can be used as a tunnel in other areas of your train set Compatible: All Hape train toys are compatible with other major railway brands.