OREGON - MT. HOOD
Mount Hood (45.4N, 121.7W) is the tallest mountain in Oregon. It is 45 miles (75 km) east-southeast of Portland, Oregon. Mount Hood is a stratovolcano made of lava flows, domes, and volcaniclastic deposits. Most of the volcano is andesite composition. The main cone of Mount Hood formed about 500,000 years ago. In the last 15,000 years the volcano has had four eruptive periods. During the most recent eruptive period, 250-180 years ago, lava domes collapsed and produced numerous pyroclastic flows and lahars which buried the southwest flank of the mountain.
Elevation: 11,239 feet / 3,426 meters
Rank: 13