Early as a child and through the growing years My dad and I used to trek into these mountains From the summits there is so much you can see Surrounding peaks, endless sky, and the blue sea And down the valley as tall as the oldest trees The symbol of our strength and survival Fortified walls We prepared for Earth's revenge Menace finally came from the Sun Shielded we saved ourselves underground Along with crops, electronics, and animals From the summits there is so much you can see Surrounding peaks, endless sky, and the blue sea And down the valley as tall as the oldest trees The symbol of our strength and survival Fortified walls A secret world built from the ground up Made possible by skills and technology Conceived to survive the worst disaster Engineered for the aftermath Fortified Walls Symbol of strength and survival Fortified Walls As high as the oldest trees Fortified Walls To complement our arsenal Fortified Walls Keep our world safe from the enemies