- Genre: Educational
- Language: English
- Target group: children
- Year of publication: 2018
- Publisher: Guidecraft, Winthrop
- Physical description: 1 set (20 various parts, 10 cards), in a box, 27 x 27 x 8 cm
- Tags: composition, rocks, wooden toys
The toy contains 10 double-sided painted cards and 20 rocks of different sizes. The toy encourages eye–hand coordination, assembling and folding.