Boring Lava Field

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Bob's Mountain in Washington State

The Boring Lava Field is an extinct Plio-Pleistocene volcanic zone with at least 32 cinder cones and small shield volcanoes lying within a radius of 13 miles (21 km²) of Kelly Butte, which is approximately 4 miles east of downtown Portland, Oregon, in the United States. The name is derived from the town of Boring, Oregon which lies just to the southeast of the most dense cluster of lava vents. The zone became active 2.7 million years ago, and has been extinct for about 300,000 years.^{[[Citing sources citation needed]]}

The Portland metropolitan area, including suburbs, is one of the few places in the continental US to have extinct volcanoes within a cities limits; Bend, Oregon is another.

Contents

1 Oregon Vents
2 Washington Vents
3 Map
4 External links

Oregon Vents

Chamberlain Hill - Elevation 980 feet
Cook's Butte - Elevation 718 feet
Kelly Butte - Elevation 590 feet
Mount Scott - Elevation 1,050 feet
Mount Tabor, Oregon - Elevation 641 feet (center of a large multi-use Portland city park)
Powell Butte - Elevation 620 feet
Rocky Butte - Elevation 612 feet (stone tower with outstanding view of Portland)
Ross Mountain - Elevation 1,380 feet
Swede Hill - Elevation 995 feet
TV Hill - Elevation 1,275 feet
Walker Peak - Elevation 2,450 feet

Washington Vents

Battleground Lake - Elevation 750 feet (miniature crater lake)
Bob's Mountain - Elevation 2,110 feet (contains intact summit crater)
Brunner Hill - Elevation 680 feet
Green Mountain - Elevation 804 feet (logged off during the First World War)
Mount Norway - Elevation 1,111 feet
Mount Pleasant - Elevation 1,010 feet
Mount Zion - Elevation 1465 feet
Nichol's Hill - Elevation 1,113 feet
Pohl's Hill - Elevation 1,395 feet
Prune Hill - Elevation 610 feet (overlooks Camas, Washington)

Map

[USGS Map of Boring Lava Field]

External links

[USGS Information page for the Boring Lava Field]

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