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E-Blox® are not your ordinary building blocks. Not only can they be used to build your creations, they can also bring them to life! E-Blox® use our patented technology, which consists of tin plated blocks that connect to a battery block, powering the electrical component blocks. The plated blocks are used to seamlessly integrate electronic circuitry into your builds to illuminate them with no wires. The Cave is a chapter in the E-Blox® novelette “Earth One”. An exciting adventure story where Seymour E. Blox climbs a mountain on faith alone and discovers a secret cave that holds the answers to many mysteries about the Earth’s history, extinct animals, old memories, a new home, and much more. Journey deep into the cave and discover shimeji mushrooms and glowing pilea flowers, and prehistoric creatures when you build a Mastodon and T-Rex! Includes 12-page storybook and 92-page assembly manual E-Blox are also compatible with other brick sets making the possibilities as endless as your imagination. Requires a 9-volt battery (not included).• Jump into a story of adventure with Seymour E. Blox.• Build 3D models that are part of the story using tin-plated blocks that safely integrate electronic circuitry throughout your creations• Illuminate your build-outs with no messy wires• Includes 118 blocks, 12-page storybook and 92-page assembly manual