The LEGO mining 4x4 4200 play set brings kids deep into the world of mining. They ride through the rocky mine to find the gold-bearing ore, then use the dynamite and miner mini-figure to blast it. The set features a rear storage compartment to hold and haul all the precious metals. This colorful set contains 102 pieces and is recommended for kids between the ages of 5 and 12. With the LEGO city mining pieces in this set, you get a miner mini-figure, a mining 4 X 4, a hatchet, a drill, a dynamite with timer and detonator, a warning sign, a big rock with gold nuggets, two gold crystals and one mining helmet. This LEGO city mine play set is a smart way to engage your kids' creativity.