Grimm's Large 5-Piece Stone Caves Stacker is a clever and versatile Waldorf-inspired wooden stacking and nesting toy that represents the element of Earth. Made in Europe and gently dyed with non-toxic, water based colors in beautiful shades of deep cool colors on the outside and vibrant yellow in the center. Each angular-shaped piece can be stacked or nested together as a puzzle, or used in open-ended imaginative play as a bridge, tunnel, fence, a cave for little gnomes or fairies, small houses for dolls or action figures, hills, roofs, see-saws...The possibilities truly are boundless when children are left to their own imagination. This Large Caves Stacker pieces also make unique building blocks, especially when combined with other Grimm's Elements Stacker sets, available separately, including Rainbow, Water Waves, and Fire (plus the 'Little Flower'). Even adults will find these Elements Blocks irresistible, and may enjoy using them as a tactile sculpture on the desk or coffee table. This Cave Stacker's ageless design and sturdy construction will last for generations -- truly an heirloom piece that will be cherished. Measures approximately 6.3 x 2.25 x 4.1 inches. Each Set comes minimally packaged in clear shrink wrap. Safe for 1 year+.About Grimm's Steeped in the rich European history of handcrafted woodworking and toy-making, Grimm's Spiel und Holz Design is nestled in small town Germany, where they lovingly create heirloom-quality, imaginative wooden playthings loved by children (and adults!) of all ages. Inspired by the educational philosophies of Rudolf Steiner (Waldorf education), these high-quality designs encourage exploration, out-of-the-box thinking, and open-ended, independent play. There are items for babies, toddlers, and older children, including many puzzles that adults will enjoy or that make excellent intergenerational activities.