Lego Train Tunnel And Tracks Expansion Set

Expand early learning possibilities with the LEGO® DUPLO® Train Tunnel and Tracks Expansion Set (10425), designed to enhance interactive play for toddlers aged 2 and up. This supplementary set (compatible with sets 10427 and 10428, sold separately) introduces a buildable tunnel structure and 10-piece track configuration featuring a funnel element and dual-directional points switch for dynamic route customization. The innovative action brick illuminates the tunnel when activated by compatible interactive trains, creating multisensory engagement. As toddlers navigate their trains through varied pathways, they cultivate spatial reasoning, problem-solving acuity, and predictive thinking—essential developmental milestones. This thoughtfully engineered expansion encourages sustained focus and patience while fostering foundational cognitive skills through hands-on exploration and discovery.