Answer:
In presenting his idea, Abbey describes the Canyon before the Dam. This is because he saw and also studied the area before and after the Dam was built.
He wrote on about the Canyon, which brought back strong memories of what the canyon country was before Glen Canyon Dam drowned the free-flowing Colorado.
Explanation:
In Beyond the Wall: Essays from the Outside by Edward Abbey, he provides a guide for readers as they journey from beyond the wall of the city and asphalt belting of superhighways into some special parts of the wilderness that spans from the interior of Alaska to the dry lands of Mexico.
Edward Paul Abbey was an American author and essayist who was well known for environmental issues advocacy.
