A long, long time ago (15,000 BCE) and for about 2000 years, floods that started in what is now Montana blasted all the way through everything in their path until they hit the Columbia River Gorge. (On their way they stole a lot of rich topsoil from places like Eastern Washington, leaving them fairly barren even today.) These floods weren’t hardly fucking around; what is now Portland was then under 400 feet of water. A lonely four volcanoes poked out from that swath of de-facto ocean. Those volcanoes are now known as Mt. Tabor, Powell Butte, Kelly Butte, and Rocky Butte.
View of Mt. Hood from Joseph Wood Hill Park, top of Rocky Butte
Those floods pushed a lot of rocks into the northside of the Butte, granting the mountain its current (obvious) name. In the early 20th century, Portlandersr built a prison and quarry there, which lasted for a…
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