Marsquake!

When a devastating quake damages a number of buildings in the Mars colony, the scramble to repair and rebuild the greenhouses becomes vital, but the threat to the colony's food source is nothing compared to the dangers found in some of the previously undiscovered lava tubes and caves that lead far below the Martian surface.When a devastating quake damages a number of buildings in the Mars colony, the scramble to repair and rebuild the greenhouses becomes vital, but the threat to the colony's food source is nothing compared to the dangers found in some of the previously undiscovered lava tubes and caves that lead far below the Martian surface.