This episode starts with Captain Diaz and his men camped along the Colorado River. Coronado and his company headed for Cibola. Coronado ordered Don Garcia Lopez de Cardenas to investigate a river to the northwest, another section of the Colorado River. The amazement that must have captivated Diaz, Cardenas and their men by seeing the Grand Canyon and the immense space and beauty of this area for the first time, O wait these places were a disappointment and an end to their travels in that direction.
The second picture shows the Uinkaret volcanic field. The Colorado River would become dammed by lava flow multiple times. Some believe these damns would last for thousands of years, creating large reservoirs, others think that these damns would quickly fail causing massive floods. A lasting evidence of this lava flow can be found at Lava Falls Rapid.