Boulderax is a Rock Monster from the Power Miners line. The Boulderaxes are strong, slow, but not so smart. Once they start attacking miners, they forget about the crystals. Glaciators get them to do their dirty work for them. For Fun, the Boulderaxes will sometimes attack the Power Miner's vechicles. Name pronounced Bolder-racks. He is one of the least common rock monsters,and his code for rock rocket is two blue crystals and one green and then two yellow crystals.