This piece depicts Thunderbird and Killer Whale: siblings, power entities, and rivals. Thunderbird has the power of flight, while Killer Whale has the power to swim, and each is jealous of the other’s power. One day, their struggle came to a head–Thunderbird released its lightning and swooped down towards the water. At the same time, Killer Whale breached and the two collided midair, then fell to the ground with a ferocious crash. The impact was so powerful the two skidded together across the mountain range and created Snoqualmie Pass, thus, allowing tribes from the east and west sides of the Cascades to be able to interact and trade with each other.
~ James Madison