High-altitude color-infrared photographs vividly show the volcano's impact on the area.

Before

After

In these photos, purple indicates areas of green vegetation.

• Trees blown down: 4 billion board feet
• Lava volume: 120 feet deep in places
• Lava temperature: At least 1,300 degrees Fahrenheit
• Slide area: 23 square miles
• Property damage: 27 bridges, nearly 200 homes, 185 miles of highways/roads
• Effect on Columbia River: Reduced channel depth from 40 feet to 14 feet
• Wildlife casualties: Killed in the blast were 7,000 deer, elk and bear; all birds and most small mammals; 12 million chinook and coho salmon fingerlings in hatcheries and an estimated 40,000 young salmon in the wild
• Cost of damage and cleanup: More than $1.1 billion