The Saurosapiens Dream

Corry and Kathy were hiking through the Andes Mountains, when a mysterious cave transports them to a world so far away, that they don't even know if its in the same universe. They met the Saurosapiens, intelligent dinosaurs who built the contraption found in the Andes, for the purpose of escaping Earth when threatened by a large asteroid. When others arrive, with a story of another doom to the Earth, they seek the dinosaur's help to build a spaceship to take them elsewhere.