Thousands of years ago, near the end of the ice age, humans once again dwelt on fertile land. But a new challenge awaits! The ice is still melting, and that fertile land will soon be flooded. All living creatures must escape to the mountains. Your engravings and cave paintings will stand the test of time, and the skills you have honed will be passed on to your descendants. It's up to you to leave your "footprints on the ground" for the generations to come.