LEGO DUPLO 10425 Train Tunnel Expansion Review

Expanding a toddler's railway network brings a quiet, tactile satisfaction to a rainy afternoon indoors in France. The chunky, smoothly curved plastic of the LEGO DUPLO Town 10425 Train Tunnel and Tracks Expansion Set clicks together with a reassuring snap, offering little hands an intuitive way to engineer longer routes. While finding storage space for the rather bulky tunnel piece requires some creative tidying, the sturdy design makes that spatial compromise worthwhile. It genuinely suits early learners grasping basic problem-solving, turning an ordinary rug into a sprawling transport hub.

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