Many travelers to Seattle's World Fair will detour to behold the stunning splendor of Grand Canyon. The two rims of the yawning ditch are from four to eighteen miles apart and the steep walls step down in a series of rainbow terraces to the busy Colorado river a mile below,

The swift river and its tributaries have dug many deep d1.tches in a huge, high plateau. The Colorado river's Grand Canyon is 218 miles long. More than 670,000 acres, including 105 miles of this Big Ditch and surrounding scenery are set aside as a National nark for our enjoyment.