Powell Butte Nature Park

Thanks for all your comments about my blip of Judy Chicago's artwork. I love her power and courage in confronting patriarchal domination. 
Today Kendall and I made our way to Powell Butte, and here's a bit from the Portland.gov history of the park. It is amazing that huge amounts of water are stored below the surface; that someone thought that far into the future regarding Portland's water needs.
“Powell Butte Nature Park
Powell Butte, an extinct cinder cone volcano, rises near the headwaters of Johnson Creek.The park is comprised of 611 acres of meadowland and forest.
Since time immemorial, the members of the Confederated Tribes of Grand Ronde lived in their traditional territories, which extended over 20 million acres from the Columbia River to the Klamath River, and from the crest of the Coast Range to the crest of the Cascade Range. Their territory included Powell Butte.
In 1925 the City of Portland purchased the land for for future water reservoirs and in the mid-1970s, the Water Bureau prepared a development plan for Powell Butte that called for the construction of four 50-million gallon underground reservoirs. In 1981, the first reservoir was built. A second 50-million gallon underground reservoir was constructed in 2014. These reservoirs serve as the hub of the Water Bureau's distribution system.”
https://www.portland.gov/parks/powell-butte-nature-park