It climbs up cliffs as it heads toward the peak of a mountain. As soon as it reaches the summit, it rolls back down the way it came.
It travels by rolling down cliffs. If it falls into a river, it will explode with its last gasp.
Dwells in holes dug into sheer walls of stone. It enjoys rolling down slopes as though it were a boulder during a rockfall, so keep an eye upward while traversing mountain roads.