The Boring Lava Field is a Plio-Pleistocene volcanic field with cinder cones, small shield volcanoes, and lava flows in the northern Willamette Valley of the U.S. state of Oregon and adjacent southwest Washington state. The zone became active about 2.7 million years ago, with long periods of eruptive activity interspersed with quiescence. Its last eruptions took place about 57,000 years ago; individual volcanic vents are considered extinct, but the field itself is not. The volcanic field covers an area of about 1,500 square miles (3,900 km2) and has a total volume of 2.4 cubic miles (10 km3). The highest elevation of the field is at Larch Mountain, which reaches a height of 4,055 feet (1,236 m). The Portland metropolitan area, including suburbs, is one of the few places in the continental United States to have extinct volcanoes within a city's limits. The probability of future eruptions affecting the Portland metropolitan area is very low.

Read more: https://en.wikipedia.org/wiki/Boring_Lava_Field

_______________________________ Today's selected anniversaries:

1865:

American Civil War: The Union Army under Major General Philip Sheridan inflicted more than 2,900 casualties on the Confederates at the Battle of Five Forks. https://en.wikipedia.org/wiki/Battle_of_Five_Forks

1879:

The Inland Customs Line, established by the British for the collection of the salt tax in India, was abandoned. https://en.wikipedia.org/wiki/Inland_Customs_Line

1922:

Under the South Seas Mandate, Japan set up a government in Koror, precipitating large-scale Japanese settlement in Palau. https://en.wikipedia.org/wiki/Japanese_settlement_in_Palau

1990:

The longest prison riot in British penal history began at Strangeways Prison in Manchester, lasting for 25 days. https://en.wikipedia.org/wiki/1990_Strangeways_Prison_riot

_____________________________ Wiktionary's word of the day:

buttinsky: 1. (derogatory) One who is prone to butt in, interrupt, or get involved where they are not welcome; a busybody. 2. (telecommunications) A robust portable one-piece telephone instrument with clips, used by technicians and lines staff for testing telephone circuits or making a temporary connection to a telephone line. https://en.wiktionary.org/wiki/buttinsky

___________________________ Wikiquote quote of the day:

Pardon me, if I'm sentimental When we say goodbye, Don't be angry with me should I cry. When you're gone, yet I'll dream A little dream as years go by… Now and then there's a fool such as I.   --Bill Trader https://en.wikiquote.org/wiki/Bill_Trader