LEGO® DUPLO® 10425 Railway Tunnel and Tracks – an expansion set that adds a tunnel, new tracks and direction-change options to an existing railway.

Key Features

• Designed to meet the needs of younger builders – suitable for children aged 2 and up.
• Guiding the tracks through the tunnel supports the child's spatial awareness.
• Building the tunnel develops dexterity and fine motor skills, according to the manufacturer.
• Combining tracks and choosing the train's destination practises problem-solving and anticipation.
• Planning new routes encourages patience, focus and perseverance.
• The completed tunnel measures over 20 cm in height, 16 cm in width and 15 cm in depth.
• The set belongs to the LEGO DUPLO Town range and is from the 2025 product year.

Use / Assembly

• The set can be combined with LEGO DUPLO Town interactive sets 10427 and 10428.
• A two-way switch allows the train's direction of travel to be changed.
• An action brick lights up the dark tunnel when activated by a compatible interactive train.
• One assembly instruction is available in PDF format.
• The pieces have been rigorously tested against strict child safety standards.

The expansion gives children more ways to plan a journey through the tunnel, choose a direction and decide the train's destination.

Packaging

• Contains 20 pieces in total.
• Includes 10 track pieces.
• The packaging includes a tunnel model, one action brick and a double switch.
• The interactive train sets 10427 and 10428 are not included and are sold separately.

In one package you get all the elements needed to add a tunnel, tracks and a track split to your railway.

About the Brand

The LEGO Group was founded in 1932 by Ole Kirk Kristiansen. The name LEGO was created by shortening the Danish words "leg godt", meaning "play well".