"I set it off where we first encountered Lilith back in the garden. It should have gone off by now, but that would be no use to us," Ahmal replied. He doubted whether Lilith was in the range of the bomb now that she had chased after them. "Do you have GPS? If we find the place close to the surface I could use the explosive device to blast a hole in the mountain and get us out of here, if we are in danger."